The Lichtenberg Castle was first mentioned in 1197 and is considered one of the oldest of Staufer family castles in Germany. In 1357 the castle and the village sold to Count Eberhard den Greiner. The feudal rule existed until 1805.
The castle has been never destroyed. The late Romanesque chapel (1220-1230) has murals on from the mid-14th century. The gatehouse is gothic. The present appearance dates mainly from the 15th century, when the family Weiler made a major renovation.
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.