The first castle at Fosteau was erected in the 14th century. In approximately 1380 Wauthier de Semousies became owner when Duchess Joan of Brabant gave it to him. His successors were the lords of Zwenne, de Marotte, de Henry and de Jamblines. They built several other buildings around the castle. The hall is Gothic.
The castle became a protected monument in 1979. Since 1980, it has housed an exhibition of antique furniture. Everything within the castle is also available for sale.
References:The Château de Foix dominates the town of Foix. An important tourist site, it is known as a centre of the Cathars. Built on an older 7th-century fortification, the castle is known from 987. In 1002, it was mentioned in the will of Roger I, Count of Carcassonne, who bequeathed the fortress to his youngest child, Bernard. In effect, the family ruling over the region were installed here which allowed them to control access to the upper Ariège valley and to keep surveillance from this strategic point over the lower land, protected behind impregnable walls.
In 1034, the castle became capital of the County of Foix and played a decisive role in medieval military history. During the two following centuries, the castle was home to Counts with shining personalities who became the soul of the Occitan resistance during the crusade against the Albigensians.