Originally built in 1606 as a summerhouse – some summerhouse! It now houses the Danish Crown Jewels and is guarded by the Royal Life Guards. Each day there is a changing of the guard between Rosenborg Castle and Amalienborg Palace. The guards leave Rosenborg at 11.30am and march to Amalienborg for the ceremony at 12noon. The Rosenborg garden is the oldest Royal Garden in Denmark.