Château de Blanquefort is a ruined castle standing on a spur overlooking the Briolance valley. In the ninth century, a first fortification was built. The white stone gave the fort the name 'White Fort', in Latin Blanca Fortis, which evolved into the modern name Blanquefort. During the Plantagenet holding of Aquitaine, the fortifications were expanded into a royal fortress at the end of the thirteenth century by Edward I of England. At the end of the Hundred Years War, the fortress became French. A wine-producing village grew around the fortifications, probably worked predominantly by serfs.
Most of the buildings date from the Middle Ages, including a keep and gatehouse (13th century), a gun tower (15th century) and two lowered towers (12th and 13th centuries), incorporated into the house.
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.