Franzensburg palace was built in 1801-1836 in the style of and medieval castle. It is named after Francis II, the last Holy Roman Emperor. In 1806 the ferry started to be used to cross the pond from the mainland to the palace island. In winter it was replaced by a wooden bridge. The castle is surrounded with a 250-hectare castle park built in the late 18th century English style. Today the castle and park is a popular excursion destination. Guided tours are available in summer season.
Rosenborg Palace was built in the period 1606-34 as Christian IV’s summerhouse just outside the ramparts of Copenhagen. Christian IV was very fond of the palace and often stayed at the castle when he resided in Copenhagen, and it was here that he died in 1648. After his death, the palace passed to his son King Frederik III, who together with his queen, Sophie Amalie, carried out several types of modernisation.
The last king who used the place as a residence was Frederik IV, and around 1720, Rosenborg was abandoned in favor of Frederiksborg Palace.Through the 1700s, considerable art treasures were collected at Rosenborg Castle, among other things items from the estates of deceased royalty and from Christiansborg after the fire there in 1794.
Soon the idea of a museum arose, and that was realised in 1833, which is The Royal Danish Collection’s official year of establishment.