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Rundetårn (Round Tower) is a 17th century tower located in central Copenhagen. One of the many architectural projects of Christian IV, it was built as an astronomical observatory. It is most noted for its 7.5-turn helical corridor leading to the top, and for the extensive views it affords over Copenhagen.

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Filename: Round-Tower-Copenhagen-1688.jpg
Copyright: © Rozanne Hakala
Image Size: 5350x3567 / 10.7MB; helix Round Tower Rundetårn curves spiral Denmark architecture CPH ramp Copenhagen tower brick helical cylindrical observatory light Scandinavia Tourist windows København corridor tourism 17th century
Contained in galleries: Copenhagen

Rundetårn (Round Tower) is a 17th century tower located in central Copenhagen. One of the many architectural projects of Christian IV, it was built as an astronomical observatory. It is most noted for its 7.5-turn helical corridor leading to the top, and for the extensive views it affords over Copenhagen.