The Round Tower

Located in the heart of Copenhagen you will find The Round Tower – one of Denmark’s most iconic historical buildings. Besides the characteristic Spiral Ramp leading visitors towards a spectacular 360-degree city view, the tower is also home to exhibitions, concerts events and Europe’s oldest working Observatory.

The Round Tower was built in 1642 by King Christian IV of Denmark, and the King himself sketched the famous golden rebus on its façade.

The Iconic Spiral

One of the star attractions of The Round Tower is the beautiful Spiral Ramp coiling 7 ½ times around the tower’s hollow core – from the cobblestones of Købmagergade all the way to the top of the tower and a gorgeous 360-degree view of the city. The Spiral Ramp is the only of its kind in Denmark, and if its walls could talk they’d tell a wealth of fascinating stories from the building’s long history. From the Russian tsar riding all the way up on horseback to the citizens of Copenhagen hiding behind The Round Tower’s walls during wartimes.

Star Gazing from Above
King Christian IV built the tower so the astronomers from Copenhagen University could inspect the stars high above the lights and smoke from the city, and for centuries, The Round Tower’s Observatory was the epicenter of Danish astronomy.

Today, visitors can look through the telescope and gaze into the night sky themselves on special nights  throughout Winter Season, gently guided by the tower’s astronomers.

Arts and Culture in The Library Hall
Halfway up the Spiral Ramp – somewhere between the streets and the sky – you’ll find The Library Hall. Here, audiences can experience exhibitions, concerts, and other cultural events year-round. From arts and crafts to science and history, the beautiful, light exhibition space hosts a wide variety of events for both children and adults. Located on the same floor, you’ll find the café and shop where visitors can have a coffee break or browse a selection of books, posters, decorations, and little souvenirs to take home.

See the website for more information on The Round Tower’s current exhibitions, events, and other activities:

The Round Tower
Købmagergade 52A

 33 73 03 73


Opening hours

Monday: 10:00 – 18:00
Tuesday: 10:00 – 21:00
Wednesday: 10:00 – 21:00
Thursday: 10:00 – 18:00
Friday: 10:00 – 18:00
Saturday: 10:00 – 18:00
Sunday: 10:00 – 18:00

Special opening hours

Summer Season (April-September):
Open Daily 10-20


December 24th-25th
January 1st
Closing Early on December 31st (at 3PM)

Opening hours are indicative. Please visit the museum’s website to be sure.


Adults: 40 DKK
Children: (5-15 years) 10 DKK
Children: under 5 years 0 DKK

Prices are indicative. Please visit the museum’s website to be sure.

Facilities, etc.