Built around 1060, the Château de Lormont probably saw Eleanor of Aquitaine stay here during her marriage to King Louis VII of France. The Prince of Aquitaine, also known as the Black Prince lived there. The archbishops of Bordeaux possessed the château in the 14th century. In 1453, negotiations to end the Hundred Years War also took place there. After having been successively destroyed and rebuilt, notably in 1626 by architect Henry Roche for the Cardinal Francis d'Escoubleau of Sourdis then to his brother Henri de Sourdis. The castle became national property in 1789.
Today the castle is private property. After a major renovation it was converted to house offices and also a restaurant.
Celje Castle was once the largest fortification on Slovenian territory. The first fortified building on the site (a Romanesque palace) was built in the first half of the 13th century by the Counts of Heunburg from Carinthia on the stony outcrop on the western side of the ridge where the castle stands. It had five sides, or four plus the southern side, which was a natural defence. The first written records of the castle date back to between 1125 and 1137; it was probably built by Count Gunter. In the western section of the castle, there was a building with several floors. Remains of the walls of this palatium have survived. In the eastern section, there was an enclosed courtyard with large water reservoirs. The eastern wall, which protects the castle from its most exposed side, was around three metres thicker than the rest of the curtain wall. The wall was topped with a parapet and protected walkway.