Eufemio Castle is mentioned in several historical sources, the oldest dating back to the first decades of the 12th century. It was described as an important place for the old town, thanks to its strategic position. In the 13th century, the importance of the Eufemio Castle grew considerably, as it was one of the main ones imperial castles of the reign of Frederick II of Swabia, whose guards guarded him during the battle against Muslims, who resided near the historic Segesta.
In the following centuries, the Eufemio Castle was inhabited by the various feudal lords who took turns at the command of Calatafimi Segesta, up to the 19th century, where it was used as prigione. Eufemio Castle remained in operation until 1868, only to be totally abandoned to itself, causing its state of degradation which, over time, saw the collapse of many of its parts. Today it is partially restored.
The Eufemio Castle would have been equipped with three towers, two still visible today in its remains, while there is no trace of the third, a fate shared also with the walls who would have wrapped it up to improve its defense system. Once you entered the Eufemio Castle, on the left there would have been the prisons, some walls of which have still been left engravings made, in all probability, by the prisoners themselves while serving their penalties. The Eufemio Castle would also have had a upper floor, which would have been used as a residence for the reigning feudal family.
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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.