The town of Saint-Chamas is located in a preserved area at the northern end of the Etang de Berre, in the heart of Provence. Saint-Chamas is divided into two parts by the Baou hill and the majestic aqueduct "Pont de l'Horloge", a natural border between the sea side and the inland.

On the sea side, the city has 4 ports, including the fishing port of Pertuis still in activity, full of charm and authenticity. Wild beaches or developed (Plage des Cabassons) offer access to swimming and water sports. The commune's coastline has the particularity of being surrounded by two preserved natural sites classified as Natura 2000 zones. 

To the south, the Petite Camargue offers a wealth of biodiversity and landscapes typical of the salt marshes of the South East. 

To the north, the Parc de la Poudrerie, steeped in history, is a place of singular and atypical industrial heritage. Nature has reclaimed its rights and the site is now classified as a wetland, offering exceptional flora and fauna.

On the hill side, the Baou hill, which divides Saint-Chamas into two parts, is of exceptional interest to tourists and curiosity seekers. From the point of view of habitat, the Baou offers an important choice of troglodytic houses. At its highest point, the Chapelle de la Miséricorde offers a panoramic view of the town and the lake. Going back down to the historical center, you will cross the Porte du Fort, last vestige of the medieval period. 

Bridges for Saint-Chamas are an essential component of its built heritage. From the remarkable Flavian Bridge, unique in its kind dating from the Roman period, to the majestic aqueduct of the Clock, passing by the monumental Saint-Léger viaduct.