The Round Tower will reopen 29 May. Learn more here soon.

Until we can open the gates to the Round Tower again, we offer a quick virtual tour to the tower platform, 34, 8 meters above street level.

How long is the Spiral Ramp? How much does the Round Tower weigh? How large is the Library Hall? Get the answers to these questions and learn much more about the measure and weight of the Round Tower here.

The 12-year-old choir boy August Nielsen fell down 25 metres when he was playing hide-and-seek one Sunday in 1880 and strayed into the hollow core in the middle of the tower. Today, one can safely step onto the glass floor in the open recess and look down into the depths that used to constitute Denmark’s zero point.

The Round Tower is one of the most Denmark’s best-known and most visited edifices. The foundation stone was laid on 7/7 1637 and five years later the Round Tower was finished as the first part…