St. Margaret's Island is one of the scenic spots in Cannes, a famous French tourist city. There are two islands in the sea outside Cannes, and the big island is St. Margaret's Island. The two outlying islands were once religious centres in southern Provence, and San Jonas was named by a Roman monk who arrived at the end of the 4th century and built a monastery. St. Margaret was his sister, and Marguerite built a monastery on the island.