In a park to the east of the Botanic Garden of Copenhagen stands Rosenborg Palace (Rosenborg Slot), constructed by Christian IV between 1608 and 1634 as a summer fort and used by the Danish Royal Family from the middle of the 18th C. as a spring and autumn home. In 1833, the citadel was opened to the public as a museum. It houses the private anthology of the Danish kings, counting furniture, paintings, sculptures, etc. In the treasure compartment in the cellar vaults the royal emblem, including the Crown Jewels, are put on the show. Of fastidious interest are the Marble Room, a Baroque reception room, and the Knights' Hall with the Coronation Throne which was used from 1871 to 1940. Porcelain is also display, including the famous "Flora Danica" service.