The Château de Robert le Diable (also known as Château de Moulineaux) was a feudal castle from the time of the Dukes of Normandy. It is named after Robert the Devil who was also known as Robert de Montgomery and Robert le Magnifique ('the magnificent'). He was the Duke of Normandy and father of William the Conqueror. However, there is no evidence that this person was involved in the construction.
The castle was built during the 11th and 12th centuries. It stands on a hill which dominates the River Seine, the view extending over the whole Rouen region, making it a particularly strategic location. It is known that the English King Richard I ('Lionheart') stayed here. His brother, King John ('Lackland') destroyed the castle during his struggle with the King of France Philip II Augustus. The castle was rebuilt in 1378 by the Lord of Sefton. During the Hundred Years War, the people of Rouen destroyed the towers to prevent the castle being used by the English. Half ruined, it is today furnished with various artefacts as well as reconstructed scenes of local history and life in the Middle Ages. The castle is privately owned.
References:Duino Castle was built by the Wallsee family in 1389 on the cliffs overlooking the Gulf of Trieste. It replaced an older castle from the 11th century. Over time, the Wallsee family disappeared and the castle, after having been used as a prison, became the residence of the Luogar and Hofer.
At the end of the 19th century it became the property of Prince Alexander von Thurn und Taxis from the Czech branch of the House of Thurn and Taxis. It remains with the family to this day with his great-grandson Prince Carlo Alessandro della Torre e Tasso, Duke of Castel Duino the current owner. The castle has been opened to the public as a museum and park.