 The grave slab of Guillaume de Margerai, priest of Querqueville, who died in the 1280s, uncovered, has been classified as an historic monument since 1995.The , begun in the 11th century at the request of William the Conqueror, remained the only parish church of the city until the 19th century.The stately church dedicated to Our Lady in the castle was destroyed along with the fortress, in the 17th century.