Colmberg Castle was built in the 13th century and purchased in 1318 by Duke Frederick IV of Nuremberg. In 1791 Colmberg fell under Prussian administration. From 1806 to 1880 it became the seat of the revenue office of the Kingdom of Bavaria. In 1927-1964 it was owned by the last Imperial Consul in Japan. Int1964 Unbehauen family of Colmberg bough the castle and started to reconstruct it into a comfortable hotel.
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.