Bergkvara Castle had originally five floors and four corner towers. It was probably built by Arvid Trolle around 1470-1480. It was owned by his family 150 years and played an important part as a political and economical power centre. Nils Dacke, the leader of the famous peasant revolt, besieged the castle in 1542 and then attacked and burned it to the ground. The castle was left to decay until in 1794 count Arvid Eric Posse build a new main building next to the old ruins.
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.