The Castle of Charles V is located in the strategic area of Hondarribia, at its highest point. It still conserves the structure of a medieval fortress and its defensive appearance. It was built in the 10th century by King Sancho Abarca of Navarre, although it was subsequently reformed by Emperor Charles V. The building served as both a castle and a palace, both connected by an interior courtyard. The castle had a square floor plan with sturdy walls. Highlights of the main facade include the doorway, rather small in size and decorated with an arch framed by the characteristic Islamic moulding known as an alfiz, over which can be seen the imperial coat of arms with the two-headed eagle of Charles V. It has today been restored and converted into a Parador hotel.
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.