According to tradition, the Irish bishop Kilian were killed with his fellows at the site of today Neumünster church. Bishop Megingoz built the first church on the site as a memorial for martyrs in the 8th century.
The next church was built around 1060 and renewed in 1250. The current Baroque appearance dates from the 18th century (1711-1722). In World War II the church was partly destroyed and restored later.
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.