Hohes Schloss (High Castle) in Bad Grönenbach was built originally in the late 12th century. The latest remaining parts where built around 1280 by Heinrich Ludwig von Rothenstein. It was enlarged in the 14th century.
In 1482 the castle was acquired by Pappenheim family. It was besieged and damaged during the Peasants' War in 1525 and conquered by Bayern and French armies in 1703 during the war of Spanish Succession.
Today Hohes Schloss is used for events, guided tours etc.
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.