17th-century observatory tower in the heart of Indre By. Spiral ramp (no stairs) winds 7.5 turns to the top. 360-degree views of Copenhagen. Peter the Great drove a carriage up the ramp in 1716.
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Insider Intel
Climb the ramp (not stairs — the ramp winds up the full height) and spend time at the top. The views are excellent and the scale of the historic city becomes clear. The library hall halfway up is often open and worth a pause.
Morning for clear views and fewer crowds. Sunset from the top in summer. The Indre By location makes it easy to combine with shopping on nearby Strøget.
Built by Christian IV in 1642 as an astronomical observatory. The university library occupied it for centuries. The equestrian spiral ramp was specifically designed so horses and carriages could ascend — hence Peter the Great's famous stunt. Still used as an observatory in winter. Entry price is modest. One of the better historic monument experiences in Copenhagen.