Tri-border region

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A triangle - also known as a country triangle - is the geographical point at which three equal borders and thus three equally administered territories ( states , member states , administrative units, etc.) meet. Such tri-border areas are mostly known when they have existed for a long time or when three cultures meet. Usually this point is marked by the respective national flag or monument . While three countries often meet, four- or multi-country corners are very rare.

General overview

Of the currently (2015) 195 states on earth recognized by the United Nations , 135 have at least one such boundary point. There are a total of 159 three-country corners on earth. The frequency of occurrence of three-country corners depends on the number of neighbors , but also on the number of sea ​​borders . So have island nations like Japan or also states like Portugal , Denmark and San Marino , which only have one neighboring country - z. B. because they are completely surrounded by a state - none. Two neighboring countries are also not a sufficient criterion, as z. B. with respect to the USA in North America . The area of ​​a country also has only a limited relationship to its number of triangles: The country with the most is the People's Republic of China with 16, while Russia , the largest country in the world in terms of area, has only 10.

Austria has nine three-country corners at its borders (making it the country with the most three-country corners in Europe), Germany seven, Switzerland six, and Liechtenstein has two three-country corners.

Mekong and Golden Triangle LA - MM - TH

Three-country corner worldwide

The following listings show lists of all international three-country corners. The countries are arranged alphabetically in ascending order.

Australia is the only state on the continent of the same name and therefore does not have a tri-border region.

The sectors of the continent of Antarctica converge at the geographic South Pole .

Africa

In Africa there are 63 three-country corners, four of which are also considered to be four-country corners :

Country 1 Country 2 Country 3 Remarks
Egypt Libya Sudan
Equatorial Guinea Gabon Cameroon
Ethiopia Eritrea Sudan
Ethiopia Kenya Somalia
Ethiopia Kenya South Sudan
Ethiopia Somalia Somaliland
Ethiopia Sudan South Sudan
Algeria Libya Niger
Algeria Libya Tunisia
Algeria Mali Mauritania
Algeria Mali Niger
Algeria Morocco Western Sahara
Algeria Mauritania Western Sahara
Angola Democratic Republic of Congo Republic of the Congo ( Cabinda )
Angola Democratic Republic of Congo Zambia
Angola Namibia Zambia
Benin Burkina Faso Niger
Benin Burkina Faso Togo
Benin Niger Nigeria
Botswana Namibia Zambia in the four-country corner of Botswana-Namibia-Zambia-Zimbabwe
Botswana Namibia Zimbabwe in the four-country corner of Botswana-Namibia-Zambia-Zimbabwe
Botswana Namibia South Africa
Country triangle BoSaNa 4.jpg

The border triangle is located on the western edge of the Kgalagadi Transfrontier National Park 1.7 km north of the Nossob river bed on the edge of the Buitepos farm ( )

Botswana Zambia Zimbabwe in the four-country corner of Botswana-Namibia-Zambia-Zimbabwe
Botswana Zimbabwe South Africa
Burkina Faso Ivory Coast Ghana
Burkina Faso Ivory Coast Mali
Burkina Faso Ghana Togo
Burkina Faso Mali Niger
Burundi Democratic Republic of Congo Rwanda
Burundi Democratic Republic of Congo Tanzania in Lake Tanganyika
Burundi Rwanda Tanzania
Djibouti Ethiopia Eritrea
Djibouti Ethiopia Somaliland
Ivory Coast Guinea Liberia
Ivory Coast Guinea Mali
Gabon Cameroon Republic of the Congo
Guinea Guinea-Bissau Senegal
Guinea Liberia Sierra Leone
Cameroon Nigeria Chad in Lake Chad , now dry
Cameroon Republic of the Congo Central African Republic
Cameroon Chad Central African Republic
Kenya Tanzania Uganda in Lake Victoria
Kenya Uganda South Sudan
Kenya Uganda Tanzania
Democratic Republic of Congo Republic of the Congo Central African Republic
Democratic Republic of Congo Rwanda Uganda until 1920 the triangle between the Belgian Congo , German East Africa and Uganda
Democratic Republic of Congo Zambia Tanzania in Lake Tanganyika Until 1920 the triangle between the Belgian Congo , German East Africa and Northern Rhodesia
Democratic Republic of Congo South Sudan Uganda
Democratic Republic of Congo South Sudan Central African Republic
Libya Niger Chad
Libya Sudan Chad
Malawi Mozambique Zambia
Malawi Mozambique Tanzania in Lake Malawi
Mali Mauritania Senegal
Mozambique Zambia Zimbabwe at Zumbo
Mozambique Zambia Tanzania
Mozambique Zimbabwe South Africa " Crook's Corner "
Mozambique South Africa Swaziland (Nordeck)
Mozambique South Africa Swaziland (South deck)
Namibia Zambia Zimbabwe in the four-country corner of Botswana-Namibia-Zambia-Zimbabwe
Niger Nigeria Chad in Lake Chad , now dry
Rwanda Tanzania Uganda
Sudan South Sudan Central African Republic

America

In Central America there are 2 triangles, in South America 13:

Country 1 Country 2 Country 3 Remarks
Argentina Bolivia Chile Cerro Zapaleri , 5653 m, 22 ° 48'56 "S 67 ° 10'43" W.
Argentina Bolivia Paraguay
Argentina Brazil Paraguay Hito Tres Fronteras , known for the Iguaçu waterfalls
Argentina Brazil Uruguay Bella Unión / Isla Brasilera
Belize Guatemala Mexico (Central America)
Bolivia Brazil Paraguay
Bolivia Brazil Peru
Bolivia Chile Peru
Brazil France (French Guiana) Suriname
Brazil Guyana Suriname
Brazil Guyana Venezuela on Mount Roraima
Brazil Colombia Peru Tres Fronteras , in the Amazon rainforest with a tri-city Tabatinga , Leticia , Santa Rosa with more than 100,000 inhabitants
Brazil Colombia Venezuela
Ecuador Colombia Peru
Guatemala Honduras El Salvador (Central America)

Since all states on the North American mainland stretch from the Pacific to the Atlantic Ocean , there is no triangle there.

The states of the United States make up 38 Tri-State Areas .

Asia

There are 42 triangles in Asia :

Country 1 Country 2 Country 3 Remarks
Abkhazia Georgia Russia Starting from the Manytn lowlands as the southern border of Europe , this point is in Asia. If the main ridge of the Caucasus is taken as the border of Europe , the point would be on the border between Europe and Asia.
Afghanistan Iran Pakistan

29 ° 52 '  N , 60 ° 52'  O cow-e Malek Siah(peak)

Afghanistan Iran Turkmenistan until December 1991 triangle between Afghanistan, Iran and the Soviet Union
Afghanistan Pakistan People's Republic of China Border point since 1895.
The adjacent area of ​​Pakistan was part of British India until 1947 and is claimed by India. The neighboring area of ​​China belonged to the Republic of East Turkestan from 1944 to 1949.
Afghanistan Tajikistan People's Republic of China until December 1991 triangle between Afghanistan, China and the Soviet Union
Afghanistan Uzbekistan Tajikistan
Afghanistan Uzbekistan Turkmenistan
Egypt Gaza Strip Israel
Armenia Azerbaijan Georgia
Armenia Azerbaijan ( Nakhchivan ) Iran
Armenia Azerbaijan ( Nakhchivan ) Turkey
Armenia Nagorno-Karabakh (de facto) or Azerbaijan (de jure) Iran
Armenia Georgia Turkey
Azerbaijan Georgia Russia Starting from the Manytn lowlands as the southern border of Europe , this point is in Asia. If the main ridge of the Caucasus is taken as the border of Europe , the point would be on the border between Europe and Asia.
Azerbaijan Nagorno-Karabakh Iran
Azerbaijan ( Nakhchivan ) Iran Turkey until 1991 tri-border area between the Soviet Union , Iran and Turkey
Bangladesh Myanmar India 1947–1971 border triangle between Burma, India and Pakistan ( East Pakistan )
Bhutan India People's Republic of China (Osteck); 1912–1950 tri-border area between Bhutan, Tibet and Sikkim, 1950–1975 between Bhutan, the People's Republic of China and Sikkim
Bhutan India People's Republic of China (Westeck); History: see Osteck
Dhekelia Turkish Republic of Northern Cyprus Republic of Cyprus Western tri-border region since the occupation of Northern Cyprus by Turkey in 1974 and the proclamation of the Turkish Republic of Northern Cyprus in 1983
Dhekelia Turkish Republic of Northern Cyprus Republic of Cyprus Eastern tri-border region since the occupation of Northern Cyprus by Turkey in 1974 and the proclamation of the Turkish Republic of Northern Cyprus in 1983
Georgia Russia South Ossetia (Westeck)
Georgia Russia South Ossetia (Osteck)
India Myanmar People's Republic of China
India Nepal People's Republic of China (Osteck); 1912–1950 triangle between Nepal, Tibet and Sikkim , 1950–1975 between Nepal, the People's Republic of China and Sikkim
India Nepal People's Republic of China (Westeck); 1912–1950 border triangle between India, Nepal and Tibet
India Pakistan People's Republic of China The point is located in the Kashmir region and therefore, according to the Indian view, entirely on Indian territory. The borders here are truce lines.
Iraq Iran Turkey
Iraq Jordan Saudi Arabia
Iraq Jordan Syria
Iraq Kuwait Saudi Arabia 29 ° 6 '  N , 46 ° 33'  O Audschat al-Batin(Auǧat al-Bāţin, عوجة الباطن) (Wadibiegung)
Iraq Syria Turkey
Israel Jordan Palestine (Nordeck)
Israel Jordan Palestine (South deck)
Israel Jordan Syria
Israel Lebanon Syria Mount Hermon
Yemen Oman Saudi Arabia DCP 19, 52 19 ° 0 ′  N , 52 ° 0 ′  E (northernmost point of Yemen, westernmost point of Oman)
Cambodia Laos Thailand
Cambodia Laos Vietnam until 1975/76 triangle between Cambodia, Laos and South Vietnam
Kazakhstan Kyrgyzstan Uzbekistan
Kazakhstan Kyrgyzstan People's Republic of China Since 1999, the common border point has been the summit of Khan Tengri in Tian Shan . Before that, the main ridge of the mountain range (across the Meridional chain and Koksaal Tau) was the limit.
Kazakhstan Russia People's Republic of China in the Altai Mountains
Kazakhstan Turkmenistan Uzbekistan
Kyrgyzstan Tajikistan Uzbekistan
Laos Myanmar Thailand Golden triangle ; until 1954 the triangle between French Indochina , Burma and Thailand
Laos Myanmar People's Republic of China until 1954 the triangle between French Indochina , Burma and China
Laos Vietnam People's Republic of China
Mongolia Russia People's Republic of China (Osteck)
Mongolia Russia People's Republic of China (Westeck); in the Altai Mountains
North Korea Russia People's Republic of China in the Primorye Region
Oman Saudi Arabia United Arab Emirates 22 ° 42 '  N , 55 ° 12'  O atUmm az-Zamul

The triangle of Kazakhstan - Russia - People's Republic of China and Mongolia- Russia-People's Republic of China are only 39 km apart in the Altai .

Europe

There are 48 international three-country corners in Europe:

Country 1 Country 2 Country 3 Remarks
Albania Greece North Macedonia in the Prespa lake
Albania Kosovo North Macedonia south of Prizren in Kosovo
Albania Kosovo Montenegro Tromeđa (2366 m) north of Bajram Curri in Albania
Andorra France Spain in the Pyrenees (Osteck)
Andorra France Spain in the Pyrenees (Westeck)
Belgium Germany Luxembourg in the Our River and near the European Monument , west of Sevenig (Germany), south of Ouren (Belgium) and east of Lieler (Luxembourg) as well as immediately south of a footbridge over the Our. In fact, this is not an exact point, but a line. Background: The border between Belgium in the north and Luxembourg in the south is formed by the valley path around the Ribbach, which flows east to the Our . The border between Belgium in the west and Germany in the east is north of the confluence of the Ribbach on the valley path of the Our flowing north. South of the confluence of the Ribbach into the Our, this river also forms the border between Luxembourg in the west and Germany in the east. However, the river itself is the common territory of these two countries ( condominium ), see Common German-Luxembourg Territory . For this reason, it is not possible to give an exact point where all three countries come together, but rather a line across the Our at the level of the valley path of the flowing Ribbach describes the situation. The corresponding area can be easily reached on foot from the car park at the European monument.
Belgium Germany Netherlands Vaalserberg west of Aachen (Germany), south of Vaals (Netherlands) and northeast of Gemmenich (Belgium) immediately east on a road between the last two places. This point was temporarily a quadrangle because of the neutral Moresnet . The area is well developed for tourism and a few meters to the north is the highest point in the European part of the Netherlands.
Belgium France Luxembourg in Chiers , east of Mont-Saint-Martin (France), in the west of the Rodange district of Pétange (Luxembourg) and south of Aubange (Belgium). The area around the border triangle is easily accessible from Luxembourg via a junction of the N5f, but not the exact point of the border triangle as this is located in a steep and densely overgrown depression of the stream.
Bosnia and Herzegovina Croatia Montenegro Northeast of Gruda in Croatia
Bosnia Herzegovina Croatia Serbia west of Crnjelovo in Bosnia-Herzegovina
Bosnia Herzegovina Montenegro Serbia west of Priboj in Serbia
Bulgaria Greece North Macedonia west of Petritsch in Bulgaria
Bulgaria Greece Turkey in the Greek community of Trigono , west of the Turkish city of Edirne
Bulgaria North Macedonia Serbia west of Kyustendil in Bulgaria
Bulgaria Romania Serbia east of Negotin in Serbia
Germany France Luxembourg in the Moselle west of Perl (Germany), northwest of Apach (France) and east of Schengen (Luxembourg) as well as south of a bridge over the Moselle and west of the northern area of ​​an island in the Moselle (also north of the weir in the Moselle). Similar situation to Germany, Luxembourg and Belgium. In fact, this is not an exact point, but a line. Background: The course of the border in the south of this area does not correspond to the course that one would expect from a map of Europe. On the one hand, the south-running border between Luxembourg (here) in the west and France (here) in the east begins here, this border being in the valley path of the Moselle. The border between Germany and France also begins at this one point in the valley path of the Moselle and runs first in an easterly direction and then in a southerly direction, also by land. France thus protrudes somewhat into this area in a northerly direction. In the north, the Moselle forms the border between Luxembourg in the west and Germany in the east. However, the river itself is the common territory ( condominium ) of these two countries, see Common German-Luxembourg Territory . For this reason, no exact point can be given for the meeting of all three countries, but a line across the Moselle at the level of the point mentioned in the valley path (at the level of the branching off of a riverside path from Rue Robert Goebbels ) best describes the situation .
Germany France Switzerland in the Rhine north of Basel (Switzerland), east of Hüningen (France) and west of Weil am Rhein (Germany) as well as south of the three-country bridge between France and Germany and north of a stele at the "Dreiländereck" named tip in the Rhine port of Basel.
Germany Austria Switzerland in Lake Constance , can be interpreted as a three-country area due to legal peculiarities, cf. Lake Constance: Territorial Affiliation and Condominium .
Germany Austria Czech Republic near the Plöckenstein (1320 m), Bohemian Forest
Germany Poland Czech Republic in the Lausitz Neisse at the mouth of the Ullersbach , southeast of Zittau
Estonia Latvia Russia west of Stuborova in Latvia
Finland Norway Russia northeast of Ivalo in Finland
Finland Norway Sweden Kolmen valtakunnan rajapyykki / Treriksrøysa / Treriksröset , border point west of Kilpisjärvi in Finland. Until 1917 the triangle between Russia, Norway and Sweden.
France Italy Switzerland near Mont Dolent (3820 m) near Mont Blanc
Italy Austria Switzerland Dreiländerecke (2179 m), foothills of Piz Lad on the Reschen Pass
Italy Austria Slovenia Monte Forno / Dreiländereck / Ofen / Peč (1508 m), near Arnoldstein, Tarvisio, Kranjska Gora; in the Karawanken
Kosovo North Macedonia Serbia southwest of Preševo in Serbia
Kosovo Montenegro Serbia east of Rožaje in Montenegro
Croatia Serbia Hungary northeast of Gruda in Croatia
Croatia Slovenia Hungary southeast of Letenye in Hungary
Latvia Lithuania Belarus northeast of Visaginas in Lithuania
Latvia Russia Belarus southeast of Suskova in Latvia
Liechtenstein Austria Switzerland (Nordeck); in the Rhine near Bangs not far from Feldkirch
Liechtenstein Austria Switzerland (South deck); Naafkopf (2571 m); in the Rätikon
Lithuania Poland Russia (Kaliningrad) northeast of Żerdziny in Poland
Lithuania Poland Belarus west of Druskininkai in Lithuania
Moldova Transnistria Ukraine (Nordeck); in the Dniester west of Nimereuca in Moldova
Moldova Transnistria Ukraine (South deck); in the Dniester east of Purcari in Moldova
Moldova Romania Ukraine (Nordeck); northeast of Darabani in Romania
Moldova Romania Ukraine (South deck); east of Galați in Romania
Austria Slovakia Czech Republic near Hohenau an der March in Austria
Austria Slovakia Hungary near Deutsch Jahrndorf in Austria
near Čunovo in Slovakia
Rajka in Hungary
Austria Slovenia Hungary Dreiländerecke / Tromejnik / Harmashatar (387 m), near Sankt Martin an der Raab , Kuzma , Felsőszölnök ; Eastern Styrian hill country / Goričko / Vasi-Hegyhát
Poland Slovakia Czech Republic at Jaworzynka in Poland and Hrčava in the Czech Republic
Poland Slovakia Ukraine Kremenez (1221 m), northeast of Nová Sedlica in Slovakia
Poland Ukraine Belarus southeast of Wlodawa in Poland
Romania Serbia Hungary south of Kübekhaza in Hungary
Romania Ukraine Hungary northeast of Bercu in Romania
Russia Ukraine Belarus Roundabout with three border crossings, southeast of Homel in Belarus (slightly increased radioactivity due to the Chernobyl disaster )
Slovakia Ukraine Hungary near Uzhhorod (Ukraine) or Záhony (Hungary)

Germany, Austria, Switzerland

The following lists show lists of the triangle formed by the German and Austrian federal states as well as by the Swiss cantons. (The federal states and cantons are arranged alphabetically in ascending order.)

Germany

Dreiherrenstein on the border from Saxony to Saxony-Anhalt and Thuringia

The 16 German federal states together form 15 triangle. Lower Saxony has the most triangle with 8, followed by Hesse with 6. Since Hamburg breaks the common border between Lower Saxony and Schleswig-Holstein, these three states form two triangle. Berlin , Bremen and the Saarland do not form an inner-German border triangle, as they only border on a different federal state.

Country 1 Country 2 Country 3 Remarks
Baden-Württemberg Bavaria Hesse am Kolli ( BW / BY ) between Waldleiningen Castle ( BW ), Breitenbach ( BY ) and Hesselbach ( HE )
Baden-Württemberg Hesse Rhineland-Palatinate in the Rhine between Sandhofen- Kirschgartshausen ( BW ), Lampertheim ( HE ) and Petersau ( RP )
Bavaria Hesse Thuringia am Querenberg ( BY ) between Hillenberg ( BY ), Melperts ( HE ) and Birx ( TH )
Bavaria Saxony Thuringia on the Drei-Freistaaten-Stein between Straßenreuth ( TH ), Münchenreuth ( BY ) and Grobau ( SN )
Brandenburg Mecklenburg-Western Pomerania Lower Saxony in the Elbe between Gaarz ( BB ), Dömitz ( MV ) and Brandleben ( NI )
Brandenburg Lower Saxony Saxony-Anhalt in the Elbe between Lütkenwisch ( BB ), Schnackenburg ( NI ) and Aulosen ( ST )
Brandenburg Saxony Saxony-Anhalt in the Annaburger Heide between Züllsdorf ( BB ) from Dautzschen ( SN ) and Bethau ( ST )
Hamburg Lower Saxony Schleswig-Holstein west of Hamburg: on the Elbe island Neßsand between Rissen -Tünsdal ( HH ), Kingdom ( NI ) and Schulau ( SH )
Hamburg Lower Saxony Schleswig-Holstein east of Hamburg: in the Elbe between Altengamme -Borghorst ( HH ), Drage -Stove ( NI ) and Geesthacht ( SH )
Hesse Lower Saxony North Rhine-Westphalia near the Hanover cliffs between Bad Karlshafen ( district of Kassel , HE ), unincorporated community Solling ( Landkreis Northeim , NI ) Beverungen (district Würgassen , Höxter , NW ). A distinction must be made between the location of the triangle until 1971 and from 1971 in this area, due to an exchange of areas. Details see here: Hannoversche Klippen .
Hesse Lower Saxony Thuringia at the forge heads between Eichenberg ( HE ), Friedland ( NI ) and Hohengandern ( TH )
Hesse North Rhine-Westphalia Rhineland-Palatinate am Ketzerbach between Rabenscheid ( HE ), Oberdresselnorf ( NW ) and Weißenberg ( RP )
Mecklenburg-Western Pomerania Lower Saxony Schleswig-Holstein in the Elbe between Boizenburg / Elbe- Horst ( MV ), Hittbergen -Barförde ( NI ) and Lauenburg / Elbe ( SH )
Lower Saxony Saxony-Anhalt Thuringia on the three-country stone between Hohegeiß ( NI ), Benneckenstein ( ST ) and Rothesütte ( TH )
Saxony Saxony-Anhalt Thuringia between Maltitz ( SN ), Langendorf ( ST ) and Prößdorf ( TH )

Austria

The sculpture Dreiklang marks the border triangle between Lower Austria (front), Upper Austria (right) and Styria (left).

The nine Austrian federal states together form five triangle. Most of the three-country corners are in Styria with four and Salzburg with three. Vorarlberg and Vienna do not have a (inner-Austrian) border triangle.

Country 1 Country 2 Country 3 Remarks
Burgenland Lower Austria Styria between Schmiedrait (Burgenland), Offenegg (Lower Austria) and Sparberegg (Styria)
Carinthia Salzburg Styria at the Königstuhl in the Gurktal Alps
Carinthia Salzburg Tyrol on the Eiskögele in the Glockner group
Lower Austria Upper Austria Styria In the saddle between the stump walls and dance floor on the Voralpe .
The border triangle is marked by a sculpture.
Upper Austria Salzburg Styria on the Torstein in the Dachstein massif

Switzerland

The 26 Swiss cantons together form 45 triangle. The canton of Bern has the most triangle with 14. The cantons of Basel-Stadt , Geneva and Schaffhausen do not have a triangle.

Canton 1 Canton 2 Canton 3 Remarks
Aargau Basel-Country Solothurn east of Anwil (Basel-Country)
Aargau Bern Lucerne near St. Urban (Lucerne)
Aargau Bern Solothurn in the Aare near Murgenthal (Aargau)
Aargau Lucerne train in the Reuss between Dietwil (Aargau), Honau (Lucerne) and Rotkreuz (Zug)
Aargau train Zurich at the confluence of the Lorze into the Reuss
Appenzell Ausserrhoden Appenzell Innerrhoden St. Gallen between Wilen (Appenzell Ausserrhoden) and Berneck (St. Gallen)
Appenzell Ausserrhoden Appenzell Innerrhoden St. Gallen between Reute (Appenzell Ausserrhoden) and Rebstein (St. Gallen)
Appenzell Ausserrhoden Appenzell Innerrhoden St. Gallen north of Kapf (Appenzell Innerrhoden)
Appenzell Ausserrhoden Appenzell Innerrhoden St. Gallen between Trogen (Appenzell Ausserrhoden) and Altstätten (St. Gallen)
Appenzell Ausserrhoden Appenzell Innerrhoden St. Gallen west of Eichberg (St. Gallen)
Appenzell Ausserrhoden Appenzell Innerrhoden St. Gallen on the summit of the Säntis
Basel-Country law Solothurn southwest of Kleinlützel (Solothurn), only a short distance from a second triangle of the same cantons
Basel-Country law Solothurn southwest of Kleinlützel (Solothurn), only a short distance from a second triangle of the same cantons
Basel-Country law Solothurn between Liesberg (Basel-Landschaft), Vicques (Jura) and Bärschwil (Solothurn)
Bern Freiburg Neuchâtel at the mouth of the Broye in Lake Neuchâtel
Bern Freiburg Vaud northwest of Clavaleyres (Bern)
Bern Freiburg Vaud southwest of Clavaleyres (Bern)
Bern Freiburg Vaud on the Dent de Ruth in the Gastlosen
Bern law Neuchâtel south of Biaufond (Jura)
Bern law Solothurn north of Schelten (Bern)
Bern Lucerne Obwalden on the Brienzer Rothorn
Bern Nidwalden Obwalden on the summit of the gray stock
Bern Nidwalden Obwalden Yoke
Bern Obwalden Uri on the summit of Grassen
Bern Uri Valais northwest of the dam
Bern Vaud Valais on the summit of the Oldenhorn
Freiburg Neuchâtel Vaud at the mouth of the Broye in Lake Neuchâtel
Freiburg Neuchâtel Vaud in Lake Neuchâtel
Freiburg Neuchâtel Vaud in Lake Neuchâtel
Freiburg Neuchâtel Vaud in Lake Neuchâtel
Freiburg Neuchâtel Vaud in Lake Neuchâtel
Glarus Grisons St. Gallen in the Glarus Alps between Piz Sardona and Piz Segnas
Glarus Grisons Uri on the summit of Piz Cazarauls in the Glarus Alps
Glarus Schwyz St. Gallen on the A3 east of Reichenburg (Schwyz)
Glarus Schwyz Uri on the summit of the Schijen in the Schwyz Alps
Grisons Ticino Uri on the summit of Piz Alv in the Gotthard massif
Lucerne Nidwalden Obwalden in the Pilatus massif near the Widderfeld
Lucerne Nidwalden Schwyz in Lake Lucerne
Lucerne Schwyz train in the lake of Zug
Nidwalden Obwalden Uri on the Ruchstock in the Unterwaldner Voralpen
Nidwalden Schwyz Uri in Lake Lucerne
Schwyz St. Gallen Zurich in Lake Zurich
Schwyz train Zurich west of Schindellegi (Schwyz)
St. Gallen Thurgau Zurich north of the Hörnli ; the triangle is marked by the three-country stone.
Ticino Uri Valais northeast of Pizzo Pesciora

Former border triangle

As a result of border shifts, it happens that the previous triangle become part of normal state borders or are entirely within the territory of only one state (e.g. the former triangle in present-day Poland ), but still remain a prominent point. As a result of the countless global border shifts over time, only a few significant former three-country corners can be listed here.

Africa

Country 1 Country 2 Country 3 Remarks
Egypt Anglo-Egyptian Sudan Libya ( Cyrenaica ) in the Sahara north of Ma'tan-as-Sarah (in the southeast of today's Libya), tri-border region from 1899 (definition of the British-French spheres of interest in the Sahara) to 1919 (cession of Egyptian territories to Italy by the British)
Anglo-Egyptian Sudan French Equatorial Africa ( Chad ) Libya ( Cyrenaica ) on the Tibesti Mountains, triangle from 1899 (definition of the Anglo-French spheres of interest in the Sahara) to 1919 (cession of the north-western tip of Anglo-Egyptian Sudan to Italy by the British)
Bophutatswana Botswana South Africa Western tri-border area during the existence of the Republic of Bophutatswana 1977–1994
Bophutatswana Botswana South Africa Eastern tri-border area during the existence of the Republic of Bophutatswana 1977–1994
Lesotho (southeast) South Africa Transkei (East) in the Drakensberg , tri-border region during the existence of the Republic of Transkei 1976–1994
Lesotho (southeast) South Africa Transkei (west) in the Drakensberg , tri-border region during the existence of the Republic of Transkei 1976–1994
Lesotho (southwest) South Africa Transkei (East) Border triangle during the existence of the Republic of Transkei 1976–1994
Lesotho (southwest) South Africa Transkei (west) Border triangle during the existence of the Republic of Transkei 1976–1994

America

Country 1 Country 2 Country 3 Remarks
Argentina Bolivia Paraguay the Pilcomayo River , triangle before the conquest of the Chaco Boreal by Paraguay in the Chaco War 1932-1935.
Since the area of ​​the Chaco Boreal between Bolivia and Paraguay was disputed, there was no defined or marked border point. According to Paraguayan view it was on the Río Pilcomayo west of the source of the Rio Monte Lima, according to Bolivian view it was just west of Asunción .
Bolivia Brazil Paraguay Fuerte Olimpo, the triangle before the conquest of the Chaco Boreal by Paraguay in the Chaco War 1932-1935
Bolivia Brazil Peru in the Sierra del Divisor , triangle of borders until the cession of Acre in the Treaty of Petrópolis 1903 by Bolivia to Brazil

Asia

Country 1 Country 2 Country 3 Remarks
Afghanistan British India East Turkestan Trilateral triangle during the existence of the Republic of East Turkestan 1944-1949 (until its annexation by the People's Republic of China), since 1949 tri-border triangle between Afghanistan, China and Pakistan
Afghanistan East Turkestan Soviet Union Border triangle during the existence of the Republic of East Turkestan 1944–1949 (until its annexation by the People's Republic of China), 1949–1991 border triangle between Afghanistan, China and the Soviet Union, since late December 1991 between Afghanistan, China and Tajikistan
Armenia Persia Turkey ( Kurdistan Autonomous Region ) between Lake Van and Lake Urmia , Dreiländereck 1920 ( Treaty of Sèvres ) to 1921 ( Treaty of Kars )
British India East Turkestan Tibet in Kunlun , triangle during the existence of the Republic of East Turkestan 1944-1949 (until its annexation by the People's Republic of China)
Since the occupation of Tibet and the Aksai Chin region by China, the place has been in the middle of Chinese territory.
China Burma Tibet in Hengduan Shan , after Tibet became independent from China in 1912, tri-border area between Tibet, China and British India , after Burma was separated from British India in 1937, tri-border area between Tibet, China and Burma, part of the Sino-Burmese since the annexation of Tibet by China in 1950 border
China India Tibet in Kunlun , border triangle 1912–1950
Since the annexation of Tibet by China and the occupation of the Aksai Chin region by China, the place is only on Chinese territory.
China Manchukuo Mongolia in the southern foothills of the Great Chingan , 1932–1937 triangle between China, Manchukuo and Outer Mongolia, 1937–1945 between Manchukuo, Inner Mongolia ( Mengjiang ) and Outer Mongolia, since Manchuria and Inner Mongolia fell back to China in 1945 Part of the Sino-Mongolian border
China East Turkestan Mongolia Dreiländereck during the existence of the Republic of East Turkestan 1944-1949 (until its annexation by the People's Republic of China)
China East Turkestan Tibet Dreiländereck during the existence of the Republic of East Turkestan 1944-1949 (until its annexation by the People's Republic of China)
India Bhutan Sikkim Border triangle until Sikkim was annexed to India in 1975
India Nepal Sikkim Border triangle until Sikkim was annexed to India in 1975
Cambodia Laos South Vietnam The tri-border area from the division of French Indochina in 1954 to the reunification of Vietnam in 1976
Laos North Vietnam South Vietnam The tri-border area from the division of French Indochina in 1954 to the reunification of Vietnam in 1976
Mongolia East Turkestan Soviet Union Dreiländereck during the existence of the Republic of East Turkestan 1944-1949 (until its annexation by the People's Republic of China)
Mongolia Tannu Tuva Soviet Union Western border triangle 1914–1918 between Urjanchaj, Russia and Outer Mongolia, 1921–1944 between Tannu-Tuva, the Soviet Union and Mongolia
Mongolia Tannu Tuva Soviet Union Eastern triangle 1914–1918 between Urjanchaj, Russia and Outer Mongolia, 1921–1944 between Tannu-Tuva, the Soviet Union and Mongolia
North Yemen Saudi Arabia South Yemen in the Ramlat al-Sab'ataya desert, triangle until the unification of Yemen in 1990
Ottoman Empire Persia Russia east of Mount Ararat , triangle until the Peace of Sèvres in 1920.
Since the Treaty of Kars in 1921, the triangle between the successor states Turkey , Iran and Azerbaijan (exclave Nakhichevan ) has been located further north where it is today.

Europe

Country 1 Country 2 Country 3 Remarks
Belgium Germany Luxembourg "At the smithy" (lux. Schmëtt ), north of Huldingen ; Northernmost point of Luxembourg; Border triangle from 1839 (division of Luxembourg) to 1920 (connection of Eupen-Malmedy to Belgium)
BR Germany GDR Czechoslovakia
Border triangle Bavaria-Saxony-Czech Republic.jpg

Until reunification , the triangle was located at the point where Bavaria , Saxony and Bohemia ( Czech Republic ) meet. It is about a point near the places Regnitzlosau , Landkreis Hof , Bavaria ; Tiefenbrunn , Eichigt municipality , Vogtlandkreis , Saxony ; Hranice u Aše , Okres Cheb , today the Czech Republic .

German Empire Austria-Hungary Russian Empire Dreikaisereck at the confluence of the Black and White Przemsa near Myslowitz in present-day Poland , 1815–1846 triangle between Prussia , Russia (Congress Poland) and the Republic of Krakow , 1846–1871 between Prussia, Russia and Austria, 1871–1918 between Germany, Russia and Austria
Germany France Luxembourg west of Redingen i. Lorraine , south of Oberkorn (Luxembourg), east of Hussingen-Godhaben (France), triangle 1871–1920 (until Alsace-Lorraine ceded to France)
Germany France Switzerland southeast of the Burgundian Gate in the forest of Les Côtes (Bois-Défendu)
between the places Pfetterhausen (Alsace), Röschlitz (France) and Brischweiler (Switzerland) is the Dreimächtestein ( Borne des Trois Puissances ), which was built from 1871 to 1920 (up to Cession of Alsace-Lorraine to France) and from 1940 to 1944 formed the triangle between Germany, France and Switzerland. Today the French departments Territoire de Belfort and Haut-Rhin and the Swiss canton of Jura, created on January 1, 1979, meet here.
Germany West Prussia Free City of Gdansk
Border stone Dreiländerecke.jpg
created by the Peace Treaty of Versailles and the Polish Corridor
1920–1939
Italy Austria Switzerland Dreisprachenspitze on the Stilfserjoch, triangle 1866–1920 (until the annexation of South Tyrol by Italy)
It has remained a "three-language corner" with Italian ( Lombardy ), German ( South Tyrol ) and Romansh ( Graubünden ) to this day.
Yugoslavia (SHS state) Austria Hungary Dreiländerecke , only 1918/19 (St. Germain) to 1920 (Trianon, Burgenland to Austria)
Latvia Lithuania Poland Up until World War II there was a triangle about 1 km east of Grendze (Medumu pagasts) . Now it is the border between Latvia and Lithuania. World icon
Austria-Hungary Romania Russia between Austrian Novosielitza and Russian Novosielitza , border triangle 1812–1918 (until the occupation of Bukovina and Bessarabia by Romania)
Austria-Hungary ( Kingdom of Hungary ) Romania Serbia west of the Iron Gate , east of Ada Kaleh Island . Dreiländereck until 1919
Austria Czechoslovakia Hungary From 1921 to October 15, 1947 (transfer of three Hungarian municipalities to Czechoslovakia / Bratislava bridgehead ) the triangle was about 7 km north of today's triangle with Slovakia .

Oceania

Country 1 Country 2 Country 3 Remarks
British New Guinea German New Guinea Dutch East Indies in the center of the island of New Guinea , triangle 1885–1920 between British New Guinea (from 1902 Territory of Papua ), German New Guinea ( Kaiser-Wilhelms-Land ) and Dutch East Indies, 1920–1949 between the Dutch East Indies, Territory of New Guinea and Territory of Papua
With When the eastern part of the island was united in 1949 to form the territory of Papua and New Guinea , the point was no longer a triangle and is now part of the border between Papua New Guinea and Indonesia .

Web links

Commons : Dreiländerecke  - collection of images, videos and audio files
Wiktionary: Dreiländereck  - explanations of meanings, word origins, synonyms, translations

Individual evidence

  1. Map of the triangle Afghanistan-Iran-Pakistan , on lib.utexas.edu
  2. Saudi Arabia and Iraq - International Frontier Treaty (… maps and geographic coordinates) ( Memento of December 2, 2011 in the Internet Archive ), on archive.org (PDF; 959 kB)
  3. Until the neutral zone between Iraq and Saudi Arabia was dissolved, this point was a quadrangle .
  4. Length using the Measure distance function on Google Maps
  5. Jan S. Krogh's Geosite: Latvia - Lithuania Boundary Point LTLV-1507 (Mateikiškė, LT / Grendze, LV)