The oldest remains of Bordeaux, the Palais Gallien designates the Roman amphitheater of Burdigala, the 2nd century, which still has beautiful arches, a monumental door and structural elements. A large part of the site occupied by the building is now covered with houses. During the the French Revolution, parts of the building will then be demolished to allow the sale of lots of land and the construction of homes. The remaining vestiges will be classified and confirmed only from 1840. The name of 'Palace Gallien' is the fruit of several legends and confusions around the origin and the dating of the 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.