A leaning tower is a tower that is inclined from the vertical . Leaning towers can unintentionally arise from uneven subsidence of the ground. However, they can also have been intentionally erected at an angle for special requirements. The world's most famous example is the Leaning Tower of Pisa . The tallest leaning tower is the tower of the Montreal Olympic Stadium at 175 meters . According to the Guinness Book of Records, the (unintentionally) "crookedest" tower in the world is the church tower of Suurhusen in East Friesland , where there is a particularly high density of crooked structures.
Buildings with an inclined cubature and facade , but whose storeys are horizontal, are not referred to as a " leaning tower".
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↑ Katharinenkirche ( Memento from February 12, 2011 in the Internet Archive ). In: oebisfelde.info, accessed on July 23, 2017 (Source: F.-K. Sonntag, H. Schröder: Oebisfelde - Eine Chronik. ).
↑ Leaning Towers: Leaning, Leaning, Boom? Photo gallery to Anja Reumschüssel: Pisa and other leaning towers. Inclined slope. In: spiegel.de. Der Spiegel, January 9, 2015, accessed on July 23, 2017 (here: Sipplingen church tower on Lake Constance).
↑ St. Wilhadi. Our church. History. In: stadtkirchen-stade.de. Ev.-luth. Church communities in the Hanseatic city of Stade, accessed on March 2, 2018.