The oldest parts of Hovdala castle date from the 16th century, although it was first time mentioned already in the 12th century. There are so-called anchoring irons visible on the facade of one of the buildings are marked with the date 1511. Hovdala's gate tower, built in the early 1600's, served as a formidable entrance for the complex. This four-storey structure, with three-foot walls, withstood intensive fighting during Scania's turbulent periods. Hovdala Castle is today a popular visitor attraction and it is managed by the National Board of Antiques.
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.