Nydala Abbey was a medieval Cistercian monastery. Nydala (from Swedish ny, meaning new, and dal, meaning valley) was called Sancta Maria de Nova Valle or just Nova Vallis in Latin. It was founded together with Alvastra Abbey in 1147 as the first cistercian monasteries in Sweden. King Gustavus Vasa appropriated the abbey in the 1520s, and the Danes sacked it in 1568. Part of the abbey church was rebuilt in the following years, and is still used as parish church. Some other ruins also remain visible at the site.
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.