Ascending the grand helical corridor of the Round Tower, or Rundetaarn, is a unique architectural experience that rewards visitors with a stunning view over the copper roofs of Copenhagen. Built in the seventeenth century by King Christian IV as an astronomical observatory, this historic tower features a wide, cobblestone equestrian ramp that winds seven and a half times around the hollow core instead of traditional stairs. As you walk up, the whitewashed brick walls and large arched windows create a beautiful, minimalist aesthetic filled with natural light.
What makes this climb fascinating is the history behind the design. The wide ramp was constructed so that heavy astronomical instruments, books, and even royal carriages could be easily transported to the top observatory without the danger of falling down steep steps.
One fun fact people love:
In 1716, the Russian Tsar Peter the Great famously rode his horse up the winding brick ramp of the Round Tower, while his Empress followed behind in a carriage drawn by six horses.
Where in Copenhagen is it?
Located on Købmagergade, a busy pedestrian shopping street in the absolute center of old town Copenhagen.
How to reach:
Easily accessible on foot from the Nørreport metro and train station, which is just a five-minute walk away.
Best time to visit:
Year-round; winter climbs offer crisp, clear views of the snowy city roofs, while summer offers long evening views.
Best time of day:
Early morning at 10:00 AM to enjoy the quiet ramp before the shopping crowd arrives, or near sunset for spectacular golden light.
Entry fee:
Admission is very budget-friendly, costing approximately 40 DKK for adults and 10 DKK for children.
Commute difficulty:
Easy; the walk up the ramp is highly accessible and gradual, although there are a few steep steps at the very top to reach the outdoor deck.
Things nobody tells you about this place:
- Halfway up the tower, you can step inside a large, restored library hall that now serves as a vibrant gallery space for modern art and history exhibitions.
- You can stand on a glass floor inside a small niche to look down into the hollow, dark center of the tower, which is exactly where the gravity point of the building lies.
- The observatory at the very top is still active during winter months, making it the oldest functioning astronomical observatory in Europe.
