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Largest triangular castle

Largest triangular castle
Who
Wewelsburg Castle
Where
Germany (Büren,)
When
1609
The largest triangle-shaped castle in the world is Wewelsburg Castle in Büren, Germany. Constructed between 1603 and 1609, the Renaissance-style structure has a total perimeter of 240 m. Originally used by the Prince-Bishopric of Paderborn, it later became notorious as one of the centres for the Nazi SS under Heinrich Himmler.