List of National Historic Sites of Canada in Ontario

This list includes buildings, objects and sites in the Canadian province of Ontario that have the status of a National Historic Site of Canada (French lieu historique national du Canada ). The Canadian Department for the Environment added 266 sites to this list. Of these, 37 are managed by Parks Canada . Ontario has by far the largest number of historical sites, most of which are concentrated in the south of the province. For this reason, individual cities and regions are outsourced to separate lists:

Status: June 2012

National Historic Sites

Historic site	date	ISIN drawing	Location	description
Adelaide Hunter Hoodless Homestead	1839 (end of construction)	1995	Brant 43 ° 1 ′ 54 ″ N , 80 ° 20 ′ 20 ″ W.43.031608 -80.338898	Early 19th century farmhouse where activist Adelaide Hoodless grew up.
Algoma Central Engine House	1912 (end of construction)	1992	Sault Ste. Marie 46 ° 31 ′ 41 ″ N , 84 ° 21 ′ 2 ″ W.46.528161 -84.350539	Well-preserved example of a brick engine shed with a turntable inside the building; built for the Algoma Central Railway .
Algonquin Provincial Park	1893 (foundation)	1992	Nipissing District 45 ° 35 ′ 3 ″ N , 78 ° 21 ′ 30 ″ W.45.584167 -78.358333	The first provincial park in Canada, known for its pioneering role in park management, visitor information and park infrastructure development.
Old Town Hall (Guelph)	1857 (end of construction)	1984	Guelph 43 ° 32 ′ 39 " N , 80 ° 14 ′ 52" W.43.544083 -80.24775	Two-storey limestone building in the neo-renaissance style ; excellent example of a multifunctional public building that served as a town hall, market hall, fire and police station, prison, library and meeting place.
Old Town Hall (Port Perry)	1873 (end of construction)	1984	Port Perry 44 ° 6 ′ 12 ″ N , 78 ° 56 ′ 50 ″ W.44.103297 -78.947267	Well-known example of an urban multi-purpose building; the lower hall was used for community meetings, the upper hall as a cultural center.
Old Town Hall (Woodstock)	1853 (end of construction)	1955	Woodstock 43 ° 7 ′ 46 ″ N , 80 ° 45 ′ 27 ″ W.43.129381 -80.757472	Italianate-style two-story brick building ; an excellent example of the adaptation of a British town hall in Canada.
Amherstburg Navy Yard	1796 (foundation)	1928	Amherstburg 42 ° 6 ′ 7 ″ N , 83 ° 6 ′ 45 ″ W.42.101883 -83.112558	Location of a Royal Navy shipyard on Lake Erie from 1796 to 1813; Center of the British Naval Presence in the Upper Great Lakes .
Annandale House / Tillsonburg Museum	1882 (end of construction)	1997	Tillsonburg 42 ° 51 ′ 45 " N , 80 ° 43 ′ 18" W.42.8625 -80.721667	One of the best preserved examples of aestheticism in Canada.
Auld Kirk (Almonte)	1836 (end of construction)	1982	Almonte 45 ° 13 ′ 32 ″ N , 76 ° 11 ′ 43 ″ W.45.225555 -76.195145	Auld Kirk is a church associated with Scottish and Presbyterian settlers in the 1830s. The church is bordered on two sides by old cemeteries.
Aurora Post Office	1915 (end of construction)	1993	Aurora 44 ° 0 ′ 10 ″ N , 79 ° 28 ′ 7 ″ W.44.002805 -79.468631	Is the fourth post office in Aurora and has a mix of Italianate and Classical Style, which are the styles of the late 19th and early 20th centuries.
Backhouse Grist Mill	1798 (end of construction)	1998	Norfolk County 42 ° 38 ′ 34 " N , 80 ° 28 ′ 29" W.42.6427 -80.4748	One of the few flour mills in the region that was not burned down during the British-American War ; one of the best preserved buildings of this type in Canada.
Belleville train station	1856 (end of construction)	1973	Belleville 44 ° 10 ′ 44 " N , 77 ° 22 ′ 29" W.44.179003 -77.374736	One of the Grand Trunk Railway erbauter Station (now VIA Rail ); oldest continuously used train station in Canada.
Prescott Railway Station	1855 (end of construction)	1973	Prescott 44 ° 42 ′ 40 " N , 75 ° 31 ′ 29" W.44.711017 -75.524611	The station Grand Trunk Railway , typical of the smaller stations during the first phase of the route between Montreal and Brockville .
Smiths Falls Railway Station	1914 (end of construction)	1983	Smiths Falls 44 ° 53 '57 " N , 76 ° 1' 40" W.44.899189 -76.027708	Train Canadian Northern Railway , which differs with characteristic turrets, polygonal waiting room and high-quality construction material standing clear of the low-cost standard construction; now used by the Smiths Falls Railway Museum .
St. Mary's Junction Railway Station	1858 (end of construction)	1993	St. Marys Junction 43 ° 16 ′ 19 ″ N , 81 ° 7 ′ 53 ″ W.43.271821 -81.131257	The Italianate-style limestone station of the Grand Trunk Railway and its temporary terminus.
Banting House	1900 (end of construction)	1997	London 42 ° 59 ′ 24 ″ N , 81 ° 13 ′ 54 ″ W.42.989958 -81.231794	Building of yellow brick, in which Frederick Banting , the insulin discovered.
Barnum House	1820 (end of construction)	1959	Grafton 43 ° 59 ′ 40 ″ N , 78 ° 0 ′ 57 ″ W.43.994436 -78.015889	Well-known example of neoclassical residential architecture, brought to Canada by settlers from New England .
Battle Hill	1814 (battle)	1924	Southwest Middlesex 42 ° 41 ′ 39 " N , 81 ° 42 ′ 18" W.42.694167 -81.705	Site of the Battle of Longwoods during the British-American War .
Beausoleil Island		2011	Muskoka District 44 ° 51 ′ 58 " N , 79 ° 52 ′ 12" W.44.8661 -79.8699	An island in the Georgian Bay Islands National Park , a cultural landscape of the Anishinabe .
Beechcroft and Lakehurst Gardens	1870 (foundation)	1978	Roche's Point 44 ° 16 '24 " N , 79 ° 30' 11" W.44.273312 -79.503025	Gardens designed by Frederick Law Olmsted .
Bell Homestead	1858 (end of construction)	1996	Brantford 43 ° 6 ′ 29 ″ N , 80 ° 16 ′ 15 ″ W.43.107918 -80.270837	The first home of the inventor Alexander Graham Bell in North America.
Belle Vue	1858 (end of construction)	1996	Amherstburg 42 ° 5 ′ 36 ″ N , 83 ° 6 ′ 46 ″ W.42.093222 -83.112775	Two-story brick building, one of the finest examples of Palladian architecture in Canada.
Bethune Memorial House	1880 (end of construction)	1996	Gravenhurst 44 ° 55 ′ 13 " N , 79 ° 22 ′ 34" W.44.920403 -79.376136	The birthplace of the doctor and internationalist Norman Bethune .
Bethune-Thompson House / White House	1805 (end of construction)	1966	South Glengarry 45 ° 8 ′ 38 " N , 74 ° 34 ′ 29" W.45.143798 -74.574788	Home of John Bethune , Upper Canada's first Presbyterian preacher ; later the residence of the explorer David Thompson .
Billy Bishop Home and Museum	1884 (end of construction)	2002	Owen Sound 44 ° 33 ′ 59 ″ N , 80 ° 56 ′ 52 ″ W.44.566389 -80.947639	Typical middle class house of the late 19th century; Birthplace of the aviator ace Billy Bishop .
Bois Blanc Island Lighthouse and Blockhouse	1839 (end of construction)	1955	Bois Blanc Island 42 ° 5 ′ 16 ″ N , 83 ° 7 ′ 11 ″ W.42.087825 -83.119856	Site of an attack by Canadian rebels during the Upper Canada Rebellion ; in response, a log cabin was built to complement the existing lighthouse .
Bridge Island / Chimney Island	1814 (end of construction)	1936	Front of Yonge 44 ° 28 ′ 7 ″ N , 75 ° 50 ′ 4 ″ W.44.468642 -75.834503	Location of the log cabin of a British garrison on an island in the Saint Lawrence River during the British-American War .
Buxton Settlement	1849 (foundation)	1999	Chatham-Kent 42 ° 18 ′ 20 ″ N , 82 ° 13 ′ 14 ″ W.42.305667 -82.220417	Community founded by the abolitionist Reverend William King to create a new home for former slaves who fled via the Underground Railroad .
Canadian Car and Foundry	1912 (end of construction)	2009	Thunder Bay 48 ° 21 ′ 25 ″ N , 89 ° 18 ′ 20 ″ W.48.357047 -89.305672	Main plant of the largest Canadian aircraft manufacturer during World War II , with one-tenth of the world production of the Hawker Hurricane ; today part of the Bombardier Transportation site .
Canal Lake Concrete Arch Bridge	1905 (end of construction)	1988	Bolsover 44 ° 33 ′ 30 ″ N , 79 ° 2 ′ 46 ″ W.44.558308 -79.046117	Bridge over the Trent-Severn waterway ; oldest known reinforced concrete bridge in Canada.
Carrying place	1787 (event)	1929	Bolsover 44 ° 2 ′ 55 ″ N , 77 ° 34 ′ 58 ″ W.44.048547 -77.582875	The place where Sir John Johnson and Mississauga chiefs negotiated a treaty that allowed a trade route between Lake Ontario and Lake Huron .
Castle Kilbride	1877 (end of construction)	1993	Baden 43 ° 24 ′ 15 ″ N , 80 ° 40 ′ 17 ″ W.43.404167 -80.671389	Italianate-style villa known for its decorative wall paintings; Residence of the politician James Livingston .
Chiefswood	1856 (end of construction)	1953	Six Nations of the Grand River 43 ° 6 ′ 4 " N , 80 ° 5 ′ 42" W43.101078 -80.094967	Buildings in Italianate architecture ; Birthplace of the writer Pauline Johnson .
Christ Church (Amherstburg)	1819 (end of construction)	1983	Amherstburg 42 ° 5 ′ 36 ″ N , 83 ° 6 ′ 46 ″ W.42.093244 -83.112765	Is a single storey church with an adjacent cemetery. It is the oldest church in Essex County and has close ties to Lt. Colonel William Caldwell (1750-1822), Rev. Richard Pollard (1753-1824) and Fort Malden (Amherstburg).
Christ Church Royal Chapel	1843 (end of construction)	1995	Deseronto 44 ° 11 ′ 8 ″ N , 77 ° 4 ′ 24 ″ W.44.185535 -77.073405	Historic chapel associated with the Mohawk settlement in Ontario; one of two royal chapels in Canada.
Claverleigh	1871 (end of construction)	1990	Creemore 44 ° 19 ′ 5 ″ N , 80 ° 6 ′ 8 ″ W.44.318014 -80.102178	Well-known example of a forest villa in neo-Gothic style.
Cliff Site	1670 (event)	1919	Port Dover 42 ° 47 ′ 8 " N , 80 ° 11 ′ 47" W.42.785592 -80.196311	The place where François Dollier de Casson and René de Bréhant de Galinée , two Sulpizian priests , took possession of the north shore of Lake Erie for France.
Cobalt Mining District	1903 (foundation)	2002	Cobalt 47 ° 23 ′ 51 " N , 79 ° 40 ′ 28" W.47.397594 -79.674353	Cultural landscape, consisting of buildings and infrastructure related to silver mining at the beginning of the 20th century; formerly one of the world's largest silver mining sites.
Cox Terrace	1884 (end of construction)	1991	Peterborough 44 ° 18 ′ 14 " N , 78 ° 19 ′ 34" W.44.303767 -78.326222	Well-known example of a terraced house in the style of the Second Empire .
Cummins Pre-contact Site	1884 (end of construction)	1991	Thunder Bay 44 ° 18 ′ 14 " N , 78 ° 19 ′ 34" W.44.303767 -78.326222	Extensive paleo-Indian quarry , used 9,000 to 5,000 years ago.
Darlingside	1830 (foundation)	1992	Leeds and the Thousand Islands 44 ° 22 ′ 6 " N , 75 ° 58 ′ 10" W.44.368283 -75.969317	A rare surviving example of a wood depot that sold fuel to steamers on the St. Lawrence River and the Great Lakes .
Donaldson Site		1982	Chippawa Hill 44 ° 30 ′ 21 ″ N , 81 ° 20 ′ 3 ″ W.44.505756 -81.334042	Archaeological site of the indigenous people, approx. 500 BC BC to AD 800
Former parade hall (Elora)	1865 (end of construction)	1989	Elora 43 ° 40 '48 " N , 80 ° 25' 44" W.43.680056 -80.428892	Representative example of the early phase of the construction of parade halls in Canada, when rural militia units were still responsible.
Former post office (Almonte)	1891 (end of construction)	1983	Almonte 45 ° 13 ′ 32 ″ N , 76 ° 11 ′ 43 ″ W.45.225542 -76.195142	Former post office , built by Thomas Fuller ; Stone building with a steep gable roof and a central clock tower .
Former Post Office (Brockville)	1886 (end of construction)	1983	Brockville 44 ° 35 '23 " N , 75 ° 41' 6" W.44.589811 -75.684883	A post office built by Thomas Fuller ; Fusion of Flemish and neoclassical elements as well as the Queen Anne style .
Former post office (Galt)	1887 (end of construction)	1983	Cambridge 43 ° 21 ′ 30 " N , 80 ° 18 ′ 56" W.43.358356 -80.315553	Post office built by Thomas Fuller ; Fusion of elements of neo-Romanesque , neo-Gothic and the Second Empire .
Ermatinger House	1823 (end of construction)	1957	Sault Ste. Marie 46 ° 30 ′ 23 " N , 84 ° 19 ′ 29" W.46.506258 -84.324628	Probably the oldest surviving stone house in Northwestern Ontario; built for Charles Oakes Ermatinger, a partner in the North West Company ; temporary headquarters of Garnet Wolseley during the Red River Rebellion #Red River Expedition .
Etharita site	1647-1649	1982	Duntroon 44 ° 24 '43 " N , 80 ° 12' 38" W.44.412 -80.210583	Main village of the Petun wolf tribe .
Fairfield on the Thames	1813 (destruction)	1945	Chatham-Kent 42 ° 37 ′ 56 " N , 81 ° 52 ′ 11" W.42.632158 -81.869731	Location of the village of Fairfield, which was founded in 1792 by escaped natives and missionaries of the Moravian Congregation ; Destroyed in 1813 during the British-American War .
Finnish Labor Temple	1910 (end of construction)	2011	Thunder Bay 48 ° 25 '56 " N , 89 ° 13' 48" W.48.432222 -89.23	Two-story brick building that played an important social and community role for Finnish immigrants.
First commercial oil well	1858 (event)	1925	Oil Springs 42 ° 47 '0 " N , 82 ° 7' 0" W.42.783417 -82.116772	Location of the world's first commercially used oil well ; first well drilled in Canada.
First commercial oil well	1863 (foundation)	1989	Cambridge 43 ° 25 ′ 39 " N , 80 ° 19 ′ 13" W.43.42751 -80.32016	A wool spinning mill that was the largest worsted yarn mill in Canada at the beginning of the 20th century .
Fort Malden	1815 (end of construction)	1921	Amherstburg 42 ° 6 ′ 28 ″ N , 83 ° 6 ′ 46 ″ W.42.107711 -83.112644	British fortress built on the ruins of Fort Amherstburg ; important defense system against border attacks during the Upper Canada rebellion .
Fort Norfolk	1814 (end of construction)	1925	Norfolk County 42 ° 41 ′ 58 " N , 80 ° 19 ′ 30" W.42.699406 -80.324972	From 1814 to 1815 location of a fortress and a naval base of the British; abandoned shortly after the British-American War .
Fort Sainte Marie II	1649 (foundation)	1920	Christian Island 44 ° 49 ′ 27 ″ N , 80 ° 9 ′ 51 ″ W.44.824161 -80.164233	Remains of a Jesuit mission station on an island in Georgian Bay ; the Wyandot's last line of defense against the Iroquois in 1651 before they fled to Québec .
Fort St. Joseph	1796 (foundation)	1923	St. Joseph Island 46 ° 3 ′ 48 ″ N , 83 ° 56 ′ 48 ″ W.46.063333 -83.946667	Westernmost British outpost on an island in the Huron Sea , built as a counterpoint to the American Fort Mackinac ; Destroyed in 1812 during the British-American War .
Fort St. Pierre	1731 (foundation)	1934	Fort Frances 48 ° 37 ′ 6 " N , 93 ° 21 ′ 36" W.48.618386 -93.3601	French fort at the mouth of the Rainy River , built by Pierre Gaultier de Varennes, sieur de La Vérendrye ; Abandoned in 1758 during the Seven Years' War .
Fort Wellington	1813 (foundation)	1920	Prescott 44 ° 42 ′ 46 " N , 75 ° 30 ′ 31" W.44.7129 -75.5085	One of the best preserved 19th century fortresses in Canada; the fort protected navigation on the Saint Lawrence River during the British-American War .
Fort William	1803 (foundation)	1923	Thunder Bay 48 ° 20 ′ 34 " N , 89 ° 21 ′ 30" W.48.342778 -89.358333	Important trading post for the North West Company ; today part of a living history theme park.
François Bâby House	1812 (end of construction)	1950	Windsor 42 ° 19 ′ 7 " N , 83 ° 2 ′ 33" W.42.3185 -83.0424	At the beginning of the British-American War, the headquarters of American troops during their attempted invasion; Captured by the British after a month and used as an artillery battery .
George Manning Furby House	1861 (end of construction)	1986	Port Hope, Ontario 43 ° 34 ′ 16 " N , 78 ° 10 ′ 52" W.43.57111 -78.181111	Very well-preserved house with a large park-like property and large trees. The exterior view of the house and the existing, original interior fittings from the beginning and up to the middle of the 19th century are interesting.
Fulford Place	1901 (end of construction)	1992	Brockville 44 ° 35 ′ 50 " N , 75 ° 40 ′ 15" W.44.597289 -75.670825	Excellent and intact example of a late 19th and early 20th century country estate; the design of the site by the Olmsted Brothers has been preserved to this day.
Gillies Grove and House	1937 (end of construction)	1993	Arnprior 45 ° 26 '42 " N , 76 ° 21' 32" W.45.444989 -76.35895	Residence associated with two of the most prominent forest industry families in the Ottawa Valley , the McLachlins and the Gillies; surrounded by one of the last primary forests with Weymouth pine .
Glanmore / Phillips-Faulkner House	1883 (end of construction)	1969	Belleville 44 ° 10 ′ 1 ″ N , 77 ° 22 ′ 3 ″ W.44.166975 -77.367536	Home of JPC Phillips, a wealthy Belleville banker and financier; an excellent representative example of the Second Empire style of the late 19th century.
Glengarry Cairn	1840 (end of construction)	1921	South Glengarry 45 ° 7 ′ 18 " N , 74 ° 29 ′ 23" W.45.121719 -74.489814	Stone mound erected by the Glengarry Militia in memory of John Colborne , commander in chief of the troops during the Upper Canada Rebellion .
Glengarry House	1792 (end of construction)	1921	Cornwall 45 ° 2 ′ 22 " N , 74 ° 37 ′ 9" W.45.039444 -74.619097	Ruins of the residence of Lt. Col. John Macdonell, an Ontario pioneer settler, first Speaker of Upper Canada's Parliament and hero of the Battle of Queenston Heights .
Glengarry Landing	1814 (event)	1923	Edenvale 44 ° 27 ′ 7 ″ N , 79 ° 54 ′ 0 ″ W.44.451828 -79.900067	Location at the confluence of the Nottawasaga River and Marl Creek, where in 1814 the Glengarry Light Infantry built a fleet of boats to aid the British garrison of Fort Michilimackinac .
Hamilton and Scourge	1813 (event)	1976	Lake Ontario , 11 km north of St. Catharines 43 ° 17 ′ 46 " N , 79 ° 17 ′ 53" W43.2962 -79.297944	Well-preserved wrecks of the schooners USS Hamilton and USS Scourge , two merchant ships that were forced into service by the Americans during the British-American War ; hit by a strong gust of wind and sunk.
Her Majesty's / St. Paul's Chapel of the Mohawks	1785 (end of construction)	1981	Brantford 43 ° 7 ′ 28 ″ N , 80 ° 14 ′ 6 ″ W.43.124447 -80.234956	First Protestant church building in Upper Canada , oldest surviving church in Ontario and one of two royal chapels in Canada; Symbol of the important role of Mohawk - loyalists in the development of the province.
Hillary House	1862 (end of construction)	1973	Aurora 44 ° 0 ′ 10 ″ N , 79 ° 28 ′ 7 ″ W.44.002803 -79.468628	Location of the Koffler Museum of Medicine ; excellent example of the Picturesque ideal in neo-Gothic .
Homer Watson House / Doon School of Fine Arts	1862 (end of construction)	1973	Kitchener 43 ° 23 ′ 42 ″ N , 80 ° 25 ′ 7 ″ W.43.394867 -80.418494	Home and studio of the landscape painter Homer Watson ; some of Watson's most famous works are views of the area from various parts of the property.
Homewood	1801 (end of construction)	1982	Augusta 44 ° 38 ′ 0 ″ N , 75 ° 37 ′ 1 ″ W.44.633208 -75.616869	Two-story house made of fieldstone , built for the prominent loyalist Solomon Jones; the building uniquely fuses the Palladian style with the rural architecture in neighboring Québec .
Huron County Gaol	1841 (end of construction)	1973	Goderich 43 ° 44 ′ 59 ″ N , 81 ° 42 ′ 30 ″ W.43.749675 -81.708283	Huron County Court and Jail Buildings ; built in the Panopticon design in the shape of an octagon .
Inverarden House	1823 (end of construction)	1968	Cornwall 45 ° 1 ′ 53 " N , 74 ° 40 ′ 16" W.45.031325 -74.671071	Manor house built for John Mcdonald, a partner in the North West Company ; excellent example of early Regency architecture in Canada.
Joseph Schneider House	1816 (end of construction)	1999	Kitchener 43 ° 26 ′ 41 ″ N , 80 ° 29 ′ 41 ″ W.43.444819 -80.494628	Museum house related to the migration of German Mennonites to Waterloo County in the early 19th century; typical example of a Mennonite house from this period.
Kay-Nah-Chi-Wah-Nung	approx. 3000 BC Chr.	1969	Morley 48 ° 38 '49 " N , 94 ° 5' 38" W.48.646933 -94.094017	One of the most important centers of early settlement and ceremonial burial in Canada, with traces of 5000 years of human use.
Lansdowne Iron Works	1801 (foundation)	1932	Leeds and the Thousand Islands 44 ° 32 ′ 58 " N , 76 ° 7 ′ 34" W.44.549328 -76.126028	The first ironworks in Upper Canada ; Destroyed by fire after a decade of operation.
Leaskdale Manse	1886 (end of construction)	1996	Leaskdale 44 ° 12 '11 " N , 79 ° 9' 38" W.44.203097 -79.160434	Home of the writer Lucy Maud Montgomery , where she wrote eleven books; the house and its surroundings are an important part of her posthumously published diary.
Leeds and Grenville County Court House	1844 (end of construction)	1966	Brockville 44 ° 35 '27 " N , 75 ° 41' 9" W.44.590864 -75.685747	Leeds and Grenville United Counties Courthouse ; monumental neoclassical building and one of the most impressive courthouses in Upper Canada .
Lynnwood / Campbell-Reid House	1851 (end of construction)	1972	Simcoe 42 ° 50 ′ 16 ″ N , 80 ° 18 ′ 12 ″ W.42.837897 -80.303322	Excellent example of a smaller neoclassical house on a hill above the Lynn River.
Macdonell-Williamson House	1819 (end of construction)	1969	East Hawkesbury 45 ° 33 ′ 49 " N , 74 ° 23 ′ 0" W.45.563628 -74.383256	Stone house on the banks of the Ottawa River ; built as the retirement home of John Macdonnell, a partner in the North West Company .
Matheson House	1840 (end of construction)	1966	Perth 44 ° 54 ′ 4 " N , 76 ° 15 ′ 2" W.44.901089 -76.250664	Home of the merchant and politician Roderick Matheson; built of sandstone in the Palladian style .
Mazinaw Pictographs		1982	Bon Echo Provincial Park 44 ° 54 ′ 2 ″ N , 77 ° 12 ′ 23 ″ W44.900572 -77.206422	The largest petroglyphic site in the Southern Canadian Shield and the only significant site of its kind in Southern Ontario.
McCrae House	1858 (end of construction)	1966	Guelph 43 ° 32 '10 " N , 80 ° 14' 42" W.43.536028 -80.245028	The birth house of the poet John McCrae , the author of In Flanders Fields .
McMartin House	1830 (end of construction)	1972	Perth 44 ° 53 ′ 52 " N , 76 ° 14 ′ 49" W.44.897814 -76.246942	Home of the politician Daniel McMartin; particularly impressive example of a federal style building .
Merrickville Blockhouse	1833 (end of construction)	1939	Merrickville-Wolford 44 ° 55 ′ 1 " N , 75 ° 50 ′ 16" W.44.916817 -75.837786	Relatively large log house ; is considered an excellent example of the defenses built by the British in the 19th century to protect the Rideau Canal .
Middleport site		1953	Brant 43 ° 5 ′ 54 ″ N , 80 ° 4 ′ 4 ″ W.43.098337 -80.067828	Archaeological site related to the Central Ontario Iroquois .
Middlesex County Court House	1829 (end of construction)	1955	London 42 ° 58 ′ 56 " N , 81 ° 15 ′ 16" W.42.982108 -81.254347	Middlesex County Courthouse ; very early and nationally significant example of neo-Gothic in Canada.
Mission of St. Ignace II	1649 (event)	1955	Tay 44 ° 43 ′ 10 " N , 79 ° 43 ′ 5" W.44.71939 -79.717977	Location of a mission station of the Jesuits ; their destruction meant the end of the Huro-Wendat Confederation and led to them leaving their traditional homeland.
Mississippi Valley Textile Mill (Almonte)	1866 (end of construction)	1989	Almonte 45 ° 13 ′ 32 ″ N , 76 ° 11 ′ 43 ″ W.45.225542 -76.195142	One of the many textile factories in Almonte and Eastern Canada. The power supply is largely ensured by hydropower from the Mississippi River, a tributary of the Ottawa River.
Mnjikaning Fish Weirs		1982	Ramara 44 ° 36 ′ 16 " N , 79 ° 22 ′ 11" W.44.604342 -79.369611	Location of the largest and best preserved wooden fish weir in eastern North America; in use from about 3300 BC Until the recent past.
Moose Factory Buildings	1673 (foundation)	1953	Moose Factory 51 ° 16 ′ 43 ″ N , 80 ° 38 ′ 22 ″ W.51.278669 -80.639306	19th century buildings belonging to the Hudson's Bay Company's second trading post in Canada; After the merger with the North West Company in 1821 , Moose Factory became a supply base for trading posts further west.
Naismith House (Almonte)	1850 (end of construction)	1992	Almonte 45 ° 13 ′ 32 ″ N , 76 ° 11 ′ 43 ″ W.45.22555 -76.19515	Is an all-wooden Georgian and Regency style house where the inventor of basketball, James Naismith, and the well-known physicist and sculptor Robert Tait McKenzie lived.
Nanticoke	1813 (battle)	1924	Nanticoke 42 ° 47 ′ 51 ″ N , 80 ° 3 ′ 12 ″ W.42.797606 -80.053339	Skirmish between Canadian militias and American looters during the British-American War ; today the site of the Nanticoke coal-fired power station .
Napanee Town Hall	1856 (end of construction)	1984	Napanee 44 ° 14 ′ 55 ″ N , 76 ° 57 ′ 2 ″ W.44.248589 -76.950689	An early example of a combination of town hall and market hall as well as a rare surviving example of a town hall in the Greek Revival style.
Nazrey African Methodist Episcopal Church	1848 (end of construction)	1999	Amherstburg 42 ° 6 ′ 5 ″ N , 83 ° 6 ′ 22 ″ W.42.101358 -83.106014	Simple fieldstone church building , now part of the North American Black Historical Museum ; erected by refugees from the Underground Railroad for the British Methodist Episcopal Church .
Normandale Furnace	1818 (first operation)	1927	Norfolk County 42 ° 42 ′ 35 " N , 80 ° 18 ′ 36" W.42.70975 -80.309883	Location of an iron smelter from the early 19th century.
Old Hay Bay Church	1792 (end of construction)	2001	Napanee 44 ° 6 ′ 11 ″ N , 77 ° 1 ′ 1 ″ W.44.103181 -77.017036	Methodist Church built by loyalist settlers ; significant element in the history of the United Church of Canada .
Old Stone Church	1853 (end of construction)	1991	Beaverton 44 ° 25 '35 " N , 79 ° 6' 57" W.44.426286 -79.115875	Small rural church made of field stones ; a particularly good example of preserved church buildings in traditional architecture .
Old Stone Mill	1810 (end of construction)	1970	Delta 44 ° 36 ′ 37 ″ N , 76 ° 7 ′ 21 ″ W.44.610206 -76.122381	Three-story stone-built flour mill that played an important role in the settlement and economic development of Leeds County; one of the oldest surviving mills in Ontario.
Oro African Methodist Episcopal Church	1849 (end of construction)	2000	Edgar 44 ° 30 ′ 10 " N , 79 ° 38 ′ 11" W.44.502689 -79.636353	Tree trunk church with unmarked cemetery; the last structural evidence of a community of Afro-Canadians with loyalist roots.
Ossossane sites		1982	Ossossane Beach 44 ° 40 ′ 56 " N , 79 ° 57 ′ 5" W.44.682325 -79.951254	Archaeological site of the main village of the Huron bear clan .
Our Lady of the Immaculate Conception	1888 (end of construction)	1990	Guelph 43 ° 32 ′ 35 " N , 80 ° 15 ′ 6" W.43.542994 -80.251631	Roman Catholic church building modeled on medieval cathedrals in France ; outstanding example of neo-Gothic in Canada.
Oxford-on-Rideau Township Hall	1875 (end of construction)	1984	Oxford Mills 44 ° 57 ′ 45 " N , 75 ° 40 ′ 43" W.44.962597 -75.678656	Two-storey stone house with dome; this small town hall is representative of the early stages of local government in Canada.
Parkhill	approx. 8000 BC Chr.	1982	North Middlesex	The first significant Paleo-Indian residence reported in Ontario ; includes concentrations of stone artifacts scattered over an area of 6 hectares.
Parkwood Estate	1940 (end of construction)	1989	Oshawa 43 ° 54 '12 " N , 78 ° 52' 6" W.43.903319 -78.868467	Mansion of industrialist Samuel McLaughlin ; is among the best and most intact examples of architectural and landscape design in Canada, with sculptures by several eminent sculptors.
Penman Textile Mill	1874 (end of construction)	1989	Paris 43 ° 11 ′ 51 ″ N , 80 ° 23 ′ 23 ″ W.43.197577 -80.389683	Former knitwear factory, long the largest Canadian company of its kind.
Perth Town Hall	1864 (end of construction)	1984	Perth 44 ° 53 ′ 57 " N , 76 ° 14 ′ 56" W.44.899128 -76.248883	Two-storey town hall with dome and clock tower; symbolic of the importance of local administration in the 19th century.
Peterborough Drill Hall	1909 (end of construction)	1989	Peterborough 44 ° 18 ′ 31 ″ N , 78 ° 19 ′ 20 ″ W.44.308656 -78.322294	In the neo-Romanesque style building arsenal.
Peterborough petroglyphs	approx. 900 to 1400	1981	Otonabee-South Monaghan 44 ° 36 ′ 48 " N , 78 ° 2 ′ 39" W.44.613444 -78.044128	Marble outcrop painted with hundreds of realistic human and animal shapes as well as abstract and symbolic images; one of the largest known concentrations of pre-Columbian petroglyphs in Canada.
Pic River Site		1981	Pic River 48 ° 37 ′ 35 ″ N , 86 ° 17 ′ 6 ″ W.48.626328 -86.284906	Area with four archaeological sites which together form various settlements of indigenous people and Europeans between approx. 12,000 BC. And represent the late 19th century.
Point Clark Lighthouse	1859 (end of construction)	1966	Pic River 44 ° 4 ′ 22 " N , 81 ° 45 ′ 26" W.44.072856 -81.757325	One of the Imperial Towers on Lake Huron ; this lighthouse is known for its distinctive lantern and architectural quality.
Pointe au Baril		1923	Maitland 44 ° 38 ′ 15 ″ N , 75 ° 36 ′ 34 ″ W.44.637583 -75.609583	This is where the last French warships were built for service on Lake Ontario , the Iroquoise and the Outaouaise .
Port Stanley	1669 (1st European contact)	1923	Port Stanley 42 ° 39 ′ 57 " N , 81 ° 12 ′ 43" W.42.665831 -81.211947	An important landing stage for numerous explorers and travelers of the 17th and 18th centuries on the north shore of Lake Erie .
Port Talbot	1803 (foundation)	1923	Port Talbot 42 ° 38 ′ 24 " N , 81 ° 21 ′ 58" W.42.64005 -81.36615	Once one of the most flourishing settlements in Upper Canada , known for its good roads; the authoritarian style of the founder of the settlement, Thomas Talbot, led to the intervention of the colonial authorities and ultimately to its decline.
Rideau Canal	1837 (end of construction)	1925	From Ottawa to Kingston 45 ° 25 ′ 33 ″ N , 75 ° 41 ′ 50 ″ W.45.425833 -75.697222	Military canal to Kingston to allow a safe supply route in case of war; used for tourism today and a UNESCO World Heritage Site .
Ridout Street Complex	1838–1870 (construction phase)	1966	London 42 ° 59 ′ 1 ″ N , 81 ° 15 ′ 17 ″ W.42.983686 -81.25485	Three residential and commercial buildings from the mid-19th century, representative of the streetscape of the cities of Ontario at that time.
Rosamond Woolen Mill	1866 (end of construction)	1986	Almonte 45 ° 13 ′ 41 ″ N , 76 ° 12 ′ 1 ″ W.45.228103 -76.200367	For a time the largest textile factory in Canada, characteristic of the facilities of this type built at the end of the 19th century.
Royal Flying Corps hangars	1917 (end of construction)	1989	Essa 44 ° 16 ′ 8 ″ N , 79 ° 53 ′ 18 ″ W.44.268928 -79.888458	Eight surviving World War I hangars in CFB Borden that played an essential role in the development of military aviation in Canada.
Ruins of St. Raphael's Roman Catholic Church	1821 (end of construction)	1966	South Glengarry 45 ° 12 ′ 42 " N , 74 ° 35 ′ 49" W.45.211719 -74.597039	The roof, the tower and the interior of the church were destroyed by fire in 1970, but the ruins were left standing; one of the earliest Roman Catholic church buildings in the English-speaking part of Canada.
Ruthven Park	1846 (end of construction)	1995	Cayuga 42 ° 58 ′ 45 ″ N , 79 ° 52 ′ 30 ″ W.42.979279 -79.87509	Country estate with villa in the Greek Revival style.
Saint-Louis Mission	1649 (event)	1920	Victoria Harbor 44 ° 43 ′ 45 ″ N , 79 ° 46 ′ 53 ″ W.44.729096 -79.781283	Location of a fortified village of the Huron-Wendat and a mission station of the Jesuits ; an attack by the Iroquois meant that the Huron Wendat had to leave their homeland in 1650.
Sainte-Marie-au-pays-des-Hurons	1639 (foundation)	1920	Midland 44 ° 44 ′ 4 " N , 79 ° 50 ′ 44" W.44.734364 -79.84542	Reconstruction of the main Jesuit mission station in the Huron-Wendat area ; Abandoned in 1649 due to epidemics and armed conflicts.
Sandwich First Baptist Church	1851 (end of construction)	1999	Windsor 42 ° 17 ′ 30 " N , 83 ° 4 ′ 49" W.42.291797 -83.080256	One of the oldest Baptist churches that have survived from this period; representative of churches in border settlements that were built by refugees from the Underground Railroad .
Sault Ste. Marie Canal	1895 (end of construction)	1987	Sault Ste. Marie 46 ° 30 ′ 46 ″ N , 84 ° 21 ′ 5 ″ W.46.512778 -84.351389	Canal used to bypass rapids in the Saint Marys River ; received the world's first electrically powered lock.
Peterborough boat lift	1904 (end of construction)	1979	Peterborough 44 ° 18 ′ 28 ″ N , 78 ° 18 ′ 1 ″ W.44.307681 -78.300289	Large boat lift on the Trent-Severn waterway that can lift ships 19.8 meters; highest hydraulic ship lift in the world.
Battle at Chrysler's Farm	1813 (battle)	1920	South Dundas 44 ° 56 ′ 31 " N , 75 ° 4 ′ 13" W.44.941978 -75.070172	Site of a victory for vastly outnumbered British troops during the British-American War ; the original battlefield was submerged in 1958 when the St. Lawrence Seaway was built.
Battle of the Windmill	1838 (battle)	1920	Prescott 44 ° 43 ′ 15 " N , 75 ° 29 ′ 14" W.44.7209 -75.4871	The site of a battle during the Upper Canada Rebellion in which loyal forces repelled a rebel invasion from American soil.
Serpent Mounds	50 BC To 300 AD	1982	Otonabee-South Monaghan 44 ° 12 ′ 40 " N , 78 ° 9 ′ 25" W.44.211111 -78.156944	A group of six mounds arranged in a serpentine shape for a length of 60 meters; the only mounds of its kind in Canada.
Sharon Temple	1831 (end of construction)	1990	Sharon 44 ° 6 ′ 5 ″ N , 79 ° 26 ′ 31 ″ W.44.101332 -79.441874	A temple of the Children of Peace , a Quaker breakaway ; Design and aesthetics embody the values of this group; Acquired in 1917 by local historians who pioneered monument conservation in Canada.
Sheguiandah	approx. 11,000 BC Chr.	1954	Manitoulin 45 ° 52 '41 " N , 81 ° 54' 4" W.45.877969 -81.901144	Archaeological site where successive indigenous peoples quarried quartzite ; Artifacts left behind are evidence of 10,000 years of use.
Sir John Johnson House	1792 (construction of the core)	1961	Williamstown 45 ° 8 ′ 41 ″ N , 74 ° 34 ′ 46 ″ W.45.144736 -74.579475	Wooden house with traditional architecture typical of Ontario in the early 19th century.
Smiths Falls Bascule Bridge	1913 (end of construction)	1983	Smiths Falls 44 ° 53 '50 " N , 76 ° 1' 37" W.44.897214 -76.027053	Bascule bridge over the Rideau Canal ; oldest surviving structure of this type.
Southwold Earthworks	about 1500	1923	Iona Station 42 ° 40 ′ 28 ″ N , 81 ° 21 ′ 38 ″ W.42.674317 -81.360591	Rare and well-preserved archaeological remains of a fortified Attawandaron village .
St. Jude's Anglican Church	1871 (end of construction)	1993	Brantford 43 ° 8 ′ 24 ″ N , 80 ° 15 ′ 13 ″ W.43.139872 -80.253493	Small Anglican church building in neo-Gothic style; known for the murals influenced by the Arts and Crafts Movement and the works of William Morris .
St. Thomas City Hall	1899 (end of construction)	1984	St. Thomas 42 ° 46 ′ 45 ″ N , 81 ° 11 ′ 34 ″ W.42.779096 -81.192723	Well designed public building with an imposing clock tower; one of the few remaining town halls in Canada in the neo-Romanesque style.
Stephen Leacock Museum / Old Brewery Bay	1928 (end of construction)	1992	Orillia 44 ° 36 '30 " N , 79 ° 23' 38" W.44.608257 -79.393977	Two story building in 4 acre park on the shores of Lake Couchiching ; Home of writer and humorist Stephen Leacock .
Stratford City Hall	1899 (end of construction)	1976	Stratford 43 ° 22 ′ 12 " N , 80 ° 58 ′ 56" W.43.369998 -80.982188	Monumental town hall with a striking clock tower; a well-known late 19th century Picturesque- style public building .
The Dead House	1868 (end of construction)	1987	Aurora 43 ° 35 ′ 1 ″ N , 79 ° 16 ′ 27 ″ W.43.583503 -79.274249	The Dead House is a rare octagonal house that is located within the cemetery area. Only 5 octagonal cemetery buildings are known in southern Ontario.
The Keeper's House	1879 (end of construction)	1987	Aurora 43 ° 35 ′ 1 ″ N , 79 ° 16 ′ 27 ″ W.43.583504 -79.274248	The Keeper's House is the only example of a picturesque house from the Second Empire style that has been preserved in its original state. It is located directly at the entrance to the cemetery.
The Pugh House	1916 (end of construction)	2006	Aurora 43 ° 35 ′ 1 ″ N , 79 ° 16 ′ 27 ″ W.43.583514 -79.274252	The Pugh House is a simply built house that has been preserved in its original state. It is privately owned and inhabited.
The Red House	1845 (end of construction)	2002	Aurora 43 ° 35 ′ 1 ″ N , 79 ° 16 ′ 27 ″ W.43.583518 -79.274258	The Red House is one of the oldest red brick houses. In the last few years it has been renovated and today there is a restaurant in the Red House.
The Roderick and Ethel Smith House	1941 (end of construction)	2006	Aurora 44 ° 0 ′ 10 ″ N , 79 ° 28 ′ 7 ″ W.44.002812 -79.468635	The Roderick and Ethel Smith House is a rare example, a house from the Second World War that has been preserved in its original condition.
Thistle Ha 'Farm	1852 (start of breeding)	1973	Claremont 43 ° 56 ′ 23 " N , 79 ° 6 ′ 33" W.43.939734 -79.10914	80 acre farm where numerous breakthrough advances in cattle breeding were made in the 19th century; the work done here played an important role in improving breeding across America.
Thunder Bay Tourist Pagoda	1909 (end of construction)	1986	Thunder Bay 48 ° 26 '4 " N , 89 ° 13' 5" W.48.434571 -89.21805	Octagonal brick tourist office, the main feature of which is a pagoda-shaped roof with a dome; well-known example of fantastic architecture .
Trent-Severn waterway	1830–1920 (construction phase)	1929	From Trenton to Port Severn 44 ° 48 ′ 13 ″ N , 79 ° 43 ′ 15 ″ W.44.8037 -79.720702	A 386-kilometer canal that connects Georgian Bay with Lake Ontario ; important traffic route, which is known for its high number of unchanged structures in some sections.
Victoria Hall / Cobourg Town Hall	1860 (end of construction)	1959	Cobourg 43 ° 57 ′ 34 " N , 78 ° 10 ′ 4" W.43.95941 -78.167808	Neoclassical public building; one of the province's more extravagant town halls; symbolizes the prosperity and optimism of Cobourg in the 1850s.
Victoria Hall / Petrolia Town Hall	1889 (end of construction)	1975	Petrolia 42 ° 52 '52 " N , 82 ° 8' 49" W.42.881198 -82.146825	Neoclassical town hall with a striking clock tower; reflects the prosperity of Petrolia during the oil boom in the 1880s.
Walker Site		1982	Brant 43 ° 7 ′ 0 ″ N , 80 ° 7 ′ 0 ″ W.43.116667 -80.116667	Great archaeological site of the Iroquois , related to the Attiwandaronk tribe.
Wellington County House of Industry and Refuge	1877 (end of construction)	1995	Fergus 43 ° 41 ′ 35 ″ N , 80 ° 23 ′ 59 ″ W.43.693071 -80.399773	Former farm dominated by a two-story stone Italianate-style house ; oldest known, government-supported poor house in Canada, today used as a museum and archive.
Whitefish Island	approx. 300 (first settlement)	1981	Sault Ste. Marie 46 ° 30 ′ 40 " N , 84 ° 21 ′ 14" W.46,511 -84,354	Small island in the Saint Marys River inhabited by eight consecutive cultures, most recently the Ojibwa .
Wilberforce Red Cross Outpost	1916 (end of construction)	2003	Wilberforce 45 ° 2 ′ 20 ″ N , 78 ° 13 ′ 25 ″ W.45.038905 -78.22359	Simple half-timbered house that served as the first outpost of the Ontario section of the Canadian Red Cross.
Wilton Barn	1840 (end of construction)	2005	Aurora 43 ° 35 ′ 1 ″ N , 79 ° 16 ′ 27 ″ W.43.583522 -79.274253	The Wilton Barn is a simply built barn, which is located on an elevated point of the Oak Ridges moraine and was built in the English style.
Wintering Site National Historic Site of Canada	1669/70 (event)	1919	Port Dover 42 ° 47 ′ 41 ″ N , 80 ° 11 ′ 22 ″ W.42.794624 -80.189332	François Dollier de Casson , René de Bréhant de Galinée and seven other French explorers wintered at this point; the mound of earth is the remnant of their hut.
Wolfe Island Township Hall	1859 (end of construction)	1984	Wolfe Island 44 ° 11 ′ 35 ″ N , 76 ° 26 ′ 27 ″ W.44.193123 -76.4408	Small rural town hall in Italianate style ; an unusually sophisticated example of this type of building.
Wolseley Barracks	1888 (end of construction)	1963	London 43 ° 0 ′ 0 ″ N , 81 ° 14 ′ 2 ″ W.43.000138 -81.233897	First infantry training center built for a purpose by the federal government; an important first step in the development of the Canadian armed forces after the withdrawal of regular British forces from Canada in 1871.
Woodside	1853 (end of construction)	1952	Kitchener 43 ° 27 ′ 49 ″ N , 80 ° 28 ′ 51 ″ W.43.463578 -80.480722	Residential building in the middle of a wooded area; the future Prime Minister William Lyon Mackenzie King spent his childhood here.