Château de Potelle was built around 1290 by Gilles de Mortagne. It has been looted and damaged in wars (1477, 1654, 1712 and 1793). The last restoration was made in 1817. The gate house was erected in the 13th-14th centuries and may have been located to the site of ancient Roman castrum. The chapel was moved to the courtyard of in 1519. Today Château de Potelle is a private home.
References: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.