The round tower of Rundetaarn was built in the 17th century to serve as an astronomical observatory. Today it is one of Copenhagen's most popular viewpoints.

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The tower does not stand alone, but is part of the Trinitatis Complex, which brings together the large Trinity Church, the university chapel and the academic library.

The height and shape of the Rundetaarn

The tower was built by King Christian IV. Denmark between 1635 and 1642 in a unique massive circular structure and baroque style.

The height exceeds 37 metres, the observatory is located 34.8 metres above the street and provides a 360° view of the entire city.

The Rundetaarn is a completely unique way to climb the observation tower. In fact, apart from a pair of staircases at the highest parts, you go up via a 2.5 metre wide circular riding corridor. The tower was originally built so that its astronomical observatory could be reached on horseback.

Unfortunately, however, the observation tower is not wheelchair accessible due to a pair of staircases just below the top.

From the upper floors of the spiral corridor, one can enter the university library, which now serves as an exhibition space and venue for various cultural events.

Admission and opening hours

The tower lookout is open every day of the year except Christmas and New Year.

  • October to March: daily 10 a.m. to 6 p.m., Tuesdays and Wednesdays until 9 p.m.
  • April to September: daily 10am-8pm

Ticket prices are as follows:

  • 40 dkk - Adults
  • 10 dkk - children aged 5 to 15

Official website:

How to get to Rundetaarn?

You'll find the tower right in the centre of Copenhagen, about 250 metres from the Nørreport transport hub, where all trains, metro lines M1 and M2 and many bus lines stop, including the 5C backbone route.

The central Kongens Nytorv square is about 400 metres to the east.

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