A staircase tower or stair tower (German: Treppenturm, also Stiegenturm or Wendelstein) is a tower-like wing of a building with a circular or polygonal ground plan that contains a stairwell, usually a helical staircase. == History == Only a few examples of staircase towers have survived from ancient times (e.g.
A staircase tower or stair tower (German: Treppenturm, also Stiegenturm or Wendelstein) is a tower-like wing of a building with a circular or polygonal ground plan that contains a stairwell, usually a helical staircase. == History == Only a few examples of staircase towers have survived from ancient times (e.g.
Source: Wikipedia "Staircase tower" · CC BY-SA 4.0
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