Ruins of Aose Castle are located close to the port of Åhus. This fortress, probably built in the 12th century and again in 1286, was protected by a high wall and a moat spanned by a drawbridge. It was destroyed in 1569 by Duke Karl, later to become King Karl IX of Sweden, and the ruins were gradually covered by drifting sand before being excavated in the late 1800s. It has always been widely assumed that the castle was built on the orders of Archbishop Eskil, but recent excavations have revealed new evidence that suggests that Canute the Great, King of Denmark and England, was the first lord of Aose Castle.
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.