Built by the monks of Sainte Croix de Talmont in the course of the 11th century, the priory was successively pillaged during the religious wars, restored by Richelieu, and converted into a fortress, guardroom and gunpowder store between the late 18th and late 19th centuries. Dominating the entrance to the harbour and protected by two long jetties erected in the 18th century, the Priory, flanked by seven 18th century cannons, offers a splendid view over the bay.

Arundel Tower, La Chaume The tower forms part of the Château Saint-Clair’s defences. The first port light was introduced in 1593. In the 18th century, the La Chaume lighthouse was the only lighthouse in the Vendée. Its present appearance is the result of restoration work undertaken between 1857 and 1858.