The twin spiral staircase of Graz is located at the former castle (Burg) of the city. In German it is generally known as Doppelwendeltreppe or Zwillingswendeltreppe. It was built around 1500. More…
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The twin spiral staircase of Graz is located at the former castle (Burg) of the city. In German it is generally known as Doppelwendeltreppe or Zwillingswendeltreppe. It was built around 1500. More…