The name Bernegg was first mentioned in 1292. Around 1365 the estate was managed by Heinrich Gottschalk. According to unconfirmed documents, the house was looted by the Confederates in 1499 and then rebuilt. In 1702, the Bernegg passed into the possession of Johann Ulrich Merhart-Mallenbrey. To this day, Merhart family still owns the house.
In 1786, Maximilian Christof von Rodt, Bishop of Constance, built the four-storey central building.
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.