Less than ten-minutes' walk from the Round Tower and now home to some of Denmark's greatest cultural treasures, the castle was originally built by Christian IV as a pleasure palace.

 Inhabited by the royal family until 1720 and after that used as a summer retreat, the castle and contents became a museum in 1838. In the basement are the Danish crown jewels and royal regalia. 

Of particular interest are the Marble Room, a Baroque reception room, and the Knights' Hall with the Coronation Throne (used between 1871 to 1940), as well as the famous Rosenborg Tapestries, which have adorned the walls since 1693.