The Îles de Lérins are a group of four small islands located off the coast of Cannes, in the French Riviera. The two main islands are Île Sainte-Marguerite and Île Saint-Honorat, known for their natural beauty, historical sites, and tranquil atmosphere. The islands are accessible by ferry and are popular destinations for tourists seeking a peaceful escape from the mainland. Île Sainte-Marguerite is famous for its Fort Royal, which once imprisoned the Man in the Iron Mask. Île Saint-Honorat is home to a Cistercian monastery that has been active since the 5th century. Both islands offer scenic walking paths, beautiful beaches, and opportunities for swimming and picnicking.