The St. Ursus Cathedral in Solothurn is dedicated to Ursus of Solothurn, who was a 3rd-century Roman Christian venerated as a saint. His his body is located under the cathedral. The first church on the site was built in the Early Middle Ages. St. Ursus of Solothurn was venerated in the city by the 5th century. By 870 there was a college of canons and presumably a collegiate church in Solothurn. A Romanesque church might have existed, but there is no written or archeological evidence to support or refute it.
The first documented record of the Gothic church comes from 1294, while the altars were ordained in 1293 and 1298. It is likely that the twin towers were damaged in the 1356 Basel earthquake damaged, but there is no reliable sources attesting to the damage. It seems likely, since in 1360 the single Wendelstein tower was built above the church and a gothic facade was added to the west face of the church.
The choir was rebuilt in 1544, while the crypt was re-covered. The nave was rebuilt in 1644 and widened. The sacristy was extended in 1664.
By the 18th century the Gothic church was in a poor condition. On 25 March 1762 the Wendelstein tower collapsed forcing the city to begin planning to replace the building. Paolo Antonio Pisoni (1738-1804) took over construction in 1772. On 26 September 1773 the new church was dedicated by the Bishop of Lausanne. The western facade of the cathedral is a monumental white stone neoclassical structure.
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.