The Gallo-Roman villa of Montmaurin dates from the first centuryies AD. The most ancient part, the residential section, now open to the public, dates from the 1st century. It was extended and enhanced in the 4th century then remained occupied until the early 6th century. The area where the accommodation and farming outbuildings (forges, brick and tile production, weaving, etc.) stood stretched to the southeast of the bath wing.
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.