The church of Saint-Hilaire probably dates back to the 12th century (1193). It was burnt down in the 17th century, along with part of the village, by the Croats during the Thirty Years' War. From 1759, the building was extended by one bay to the east, with the construction of a new choir with a flat chevet and an adjoining sacristy. In 1880, the church was enlarged again with the construction of a choir further to the east and a crypt underneath. Finally, the bell tower was added in 1899. Saint-Hilaire church features a high altar by Antoine Besançon of Langrois, a single-vault nave with three bays, a tower-porch crowned with a slate-roofed rhomboid spire, a choir with one right-hand bay and a crypt covered with segmental barrel vaults.
Eglise Saint-Hilaire de Longeau
