Saint-Jacques is a single nave church covered with a frame supported roofing. The choir and the six side chapels are on cross-rib vaults. The first two spans are mounted on a gallery where the pilgrims on their way to Saint-Jacques de Compostelle could take shelter for the night.

Built in the second half of the 14th century, this church was modified in 1510 and enlarged in 1694. The bell tower was also built in the 14th century from “cairou”, a red local brick. The two top floors collapsed in 1563 and were rebuilt the same year.