Mörby was first mentioned 1387 as built by the knight Henrik Damerow. Since 1452 it was owned by Oxenstierna family over 250 years. 1550 the castle was rebuilt after a fire. In 1733 it was left as a decay and the roof was ripped off and moved to Ekeby Castle. Finally Mörby was destroyed by fire in 1740. Today still impressive ruins remain including a tower body.
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.