Château de Quillan was first mentioned in 1125. There had been a fort built by Visigoths already in 781 AD. The castle was conquered by the Royal army of France in 1210 during the Albigensian Crusades. The castle got its current appearance in restorations of 1232 and 1341. Since then Quillan castle has been damaged in wars by Spanish Armies and Huguenots (1575).
Since the 18th century Château de Quillan was left to decay and dismantled. Today still the impressive ruins remain overlooking the village.
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.