The Royal Tobacco Factory, an 18th-century industrial building was, at the time it was built the second largest building in Spain, second only to the royal residence El Escorial. It remains one of the largest and most architecturally distinguished industrial buildings ever built in that country, and one of the oldest such buildings to survive.
Since the 1950s it has been the seat of the rectorate of the University of Seville. Prior to that, it was, as its name indicates, a tobacco factory: the most prominent such institution in Europe, and a lineal descendant of Europe's first tobacco factory, which was located nearby. It is one of the most notable and splendid examples of industrial architecture from the era of Spain's Antiguo Régimen.
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.