The Hotel Dieu chapel was founded circa 1200 by Gauthier de Maintenay, lord of Montreuil and was used as hospital until 1922. In 1865 the architect Clovis Normand instigated its restoration and added magnificent stained-glass windows. He adorned the facades with blind arcades, pinnacles and niches which are reminiscent of the typical features of the Flamboyant Gothic Style. The chapel has retained its 15th century portal, depicting scenes from the Passion of the Christ. Outstanding pieces of furniture dating back to the 17th and 18th centuries can be seen inside. The chapel, which became a listed monument in 2000, now belongs to the city of Montreuil-sur-Mer.