Rochlitz Castle lies in the west of the town of Rochlitz. It was built on the site of an imperial castle, erected in the second half of the 10th century, which fell into the possession of the Wettin margraves in 1143. Its appearance, which includes several Romanesque wings, is considerably influenced by its remodelling into a margravial schloss in the fourth quarter of the 14th century. Further conversions and additions followed at the end of the 15th and in the 16th centuries, when the castle became a secondary residenz, dower house and hunting lodge for the Wettin family. The castle or palace was the residence for members of the Saxon princely house eight times. From the 18th century the castle served as an administrative centre (justice department and district court); in 1852 it became a gaol, which necessitated considerable alteration. The museum founded in 1892 was gradually expanded and, today, takes up almost the entire castle.
The palace lies southwest of the historic town centre of Rochlitz on a spur of the Rochlitzer Berg that descends gradually towards the east-northeast and is flanked by the Zwickau Mulde to the southeast and the Hellerbach stream to the northwest. The hill spur is divided into the Nosswitz castle hill in the west, which at 200 m above sea level is noticeably higher and covers an area of about 300 metres by 60 metres, and the Rochlitz castle hill with the palace complex (about 90 × 30–40 m), separated by a late medieval neck ditch. The main palace is further separated by ditches from the western lower bailey (the so-called Unterschloss) and the eastern lower bailey (Vorburg) with St. Peter's Church and a total length of about 220 × 40 m.
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.