Become the King’s Postman

During the summer holidays, children can enter the service of Christian IV and learn much more about the king on the occasion of the 400th anniversary of the Danish postal service.

The Round Tower was erected by King Christian IV, who built its round walls in the royal colours of yellow and red. The same colours were used for many years by the Danish postal service.

This is no coincidence since it was Christian IV who founded the postal service when issuing a decree on postmen on 24 December 1624.

On the occasion of the 400th anniversary, you can become a postman in the Round Tower for the summer holidays. At the entrance you can take a letter which you will be able to fill in with letters as you find the yellow and red bubbles throughout the tower.

By means of the bubbles, you can find the secret word but also learn much more about Christian IV and his connection with the Round Tower. The summer holidays activity for children is free when you have paid the entrance to the tower.

Design Your own Stamp at ENIGMA Museum

When you have found the secret word, you can take your letter to ENIGMA – Museum of Communication‍, which is located Øster Allé 3 in Copenhagen.

If you bring the letter with the secret word, you get free access to ENIGMA for all children up to the age of 18 until 29 September 2024. Children under the age of 10 must be accompanied by min. 1 paying adult.

At ENIGMA you can experience the story of Christian IV organising the Danish communication and many other stories. You can also design and have your very own stamp printed to take home – free of charge.

Read more about ENIGMA