Branzoll Castle was built around the year 1250 by the Lords of Sabiona. Between 1465 and 1671, it was the site of the Prince-Bishop's court judge. In 1671, it was destroyed in a fire. In 1895, reconstruction began. While the castle-keep still contains parts of the former fortress, the residential tract is completely new. The view from the church square of the buildings on both sides and the castle looming over it all is among the architecturally most breathtaking sights the city has to offer.
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.