Round Tower Tours and Activities

The Round Tower (Rundetaarn) is one of the most recognisable shapes on the Copenhagen skyline. Built in the 17th century as an observatory, the building also houses a gallery, concert hall and cultural centre. From the top you can also enjoy panoramic views of the city.

The tower was commissioned by King Christian IV, who had a profound influence on the city’s architectural heritage. Dating from 1642, the observatory was inspired by the newfound enthusiasm for astronomy that was sweeping Europe at that time. It was the brainchild of the king’s astronomer, Christian Longomontanus, who became its first director, and was designed as a research facility for the University of Copenhagen. The original complex also incorporated a library and a small church for the students’ use.

The different areas of the tower are accessed by a sweeping ramp which encircles the central column. The wide, gently sloping ramp turns 7.5 times in its journey from street level to summit, and was specially designed to allow a horse and carriage to transport heavy items to and from the library and observatory.

The Library Hall today serves as a cultural centre, with exhibitions of contemporary art and other events that are open to the public. Concerts are also held here most weeks, featuring an entertaining variety of jazz, classical and folk from local and visiting musicians. Further up the ramp you will find the observation deck, 34 metres above street level, where you can take in the city sights while enjoying a snack from the refreshment kiosk.

The observatory itself is reached via a steep staircase and is open to the public on Sunday afternoons in summer. It is also open on certain evenings for star-gazing. Check the tower’s website for opening times and conditions.

The Round Tower is located in the centre of the city and is easily reached on foot or by bike. The nearest metro station is Nørreport. The tower is open every day from March to October with longer hours during the summer months. There is a small admission charge.