The Mountain Church or Saint Nicholas Church is a Romanesque basilica built between 1198 and 1209 and consecrated to Saint Nicholas. In the 15th century the Mountain Church underwent several renovations, which gave it a more late Gothic appearance. The two characteristic tower spires are built in that period. The lower part is still original. In 1580 the Dutch Reformed Church took the temple and renamed it the Mountain Church. All catholic features were removed from the interior, which was very common to do. The wall paintings were covered with white chalk.
In 1967 the church was disestablished and its property transferred to the Municipality of Deventer. The building is used as an exhibition center and concert hall. From 1991 until 2005, the church was used for temporary exhibitions by Museum de Fundatie.
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.