This religious 9th century chapel is a very pure Romanesque style. This is one of the oldest in the region. Its Bell was also called Sainte-catherine. It has a lantern of the dead. The Chapelle St-Sulpice reveals the former Istres, as Oppidium du Castellan, an ancient place Celto-Ligure which overlooks the étang de L'olivier. The chapel Saint-Sulpice is a major building of the Romanesque Provence and is classified since 1942 to the supplementary inventory of Historic Monuments. Today, the chapel has to promote artists and amateur practices in organizing exhibitions around the arts and Visual arts. It offers throughout the year a programme of exhibitions of artistic practices in a spirit of openness on contemporary art.These exhibitions, bringing together professionals and amateurs, are aimed at the broadest audience. The beauty and the acoustics of the place also invite arts of gesture, poetry and song to cross their respective creations.Each exhibition in its staging is designed to resonate with this exceptional place and return the echo of a balance maintained between art and architecture.