The Castle Church of Schleiden, a late-gothic three-nave hall-church with an interesting net-and-star vault, was built between 1516 and 1525 according to the plans of Johann Vianden. This Castle Church is the Catholic parish church today. On the end walls of the side aisles are precious glass paintings from 1535, a valuable König organ (constructed around 1770) and a sarcophagus made of black marble. Equally remarkable are the late-gothic glass windows, the vault paintings and the Flemish altar wing.
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.