Santa Lucía del Trampal is a monastic church, one of the few surviving Visigothic buildings. Apparently, the basilica was built toward the end of the 7th century as part of a convent pertaining to the Templar monks, for which it served as a chapel, with a single nave and three chapels in the chancel. Along with the transept, the chancel is the truly Visigothic part, built upon perfectly-angled dressed stone. The main body of the church is believed to have been built around the 14th or 15th 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.