Greinburg Castle was built between 1488 and 1495 by Heinrich and Siegmund Prüschenk with the imperial approval of Emperor Friedrich III. In 1533 Johann Leble (Löbl), acquired the castle. Under him the building received most of its present day form. In 1621 the castle was sold to the Earl Leonhard Helfrich of Meggau, who carried out basic changes. A three storeyed, columned arcade became the main feature for the appearance of the inner courtyard. Furthermore, under Meggau the Sala terrena (so-called stone theatre) was installed. In 1625 the “Rittersaal”, the Hall of Knights, and an adjoining chapel in the south west tower were redecorated.
The Dukes of Saxe-Coburg and Gotha have been owners of the Castle only since 1822. The building, which comprises four wings, houses the Coburg Rooms, which are the official rooms of the ducal family, as well as the Upper Austrian shipping museum.
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.