The Château-sur-Epte Castle construction was begun in 1097 by William Rufus, King of England, to reinforce the frontier of Epte. The castle occupied a site on the border between the Duchy of Normandy and the Kingdom of France. In 1119, it was besieged by Louis VI of France and reinforced by the Plantagenets in the 12th century and again during the Hundred Years' War.
In the 12th century, it was restored and reinforced by Henry II of England (keep and entry). Other works were carried out in the 14th century. In 1437, the château was captured by John Talbot, 1st Earl of Shrewsbury. The castle's role declined in the 16th century and it was ordered to be dismantled by Mazarin in 1647. Transformed into an agricultural centre under the Ancien Régime, it comprised a motte with a stone keep, a lower court linked to the motte and defended by a curtain wall flanked in the east and west by two fortified gateways (14th century), a drawbridge and, in the lower court, a medieval barn, a 17th century corps de logis and a dovecote. The condition of the site deteriorated.
The ruins are private property. It has been listed since 1926 as a monument historique by the French Ministry of Culture.
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.