Pedraza Castle dates from the 13th century and it was rebuilt in the 15th century by García Herrera and again in the early 16th century by the Dukes of Frías.
Poligonal ground plan, double enclosure, with cues and square turrets, plus an artificial moat excavated in the rock. The castle uses part of the wall and preserves the remains of one front, with Romanesque elements.
The tower that serves as the tower of homage uses a different bonding that the rest of the castle. It used to be owned by the Herrera and the Velasco (Dukes of Frías) families. The sons of the king of France, Frans I, were kept hostage in this castle in the 16th century.
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.