The Church of Saint-Nizier name refers to Nicetius of Lyon, a bishop of the city during the 6th century. The first religious building on the site of the present church was a Roman monument, perhaps a temple of Attis, whose worship was probably the cause of the Christian persecution in Lyon from 177. In the 5th century, according to tradition, Eucherius of Lyon, 19th bishop of Lyon, built on the ruins of the building a basilica to contain the relics of the martyrs in Lyon, tortured in 177. In the 6th century, the bishops were buried in the church, particularly Nicetius of Lyon, the 28th bishop. The body of the latter attracted a crowd and his presumed great miracles led the church to take his name.
In the early 8th century, the church has been ravaged by the Saracens and by Charles Martel. It was rebuilt in the 9th century, at the behest of the bishop Leidrade. Peter Waldo, in the 13th century, was a parishioner. His disciples, shocked by the wealth of the church, even set fire in 1253.
From the 14th century to the late 16th century, the church was gradually rebuilt. In 1562, the notables gathered in the church, and in the 17th century, the aldermen were elected in the nave. It suffered the damage caused by several bands of Huguenot, which plundered the bishops of Lyon's tombs, then those of the French Revolution.
After the French Revolution, the church served as flour warehouse. In the late 18th century, the project to transform the church into a gallery was abandoned after a petition signed by 100 notables.
The sacristy was built in 1816, and the organ was installed in 1886.
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.