Explore the Chausey archipelago, Europe's largest island group by low-tide area. This walking tour covers Grande Grève Beach with its famous Elephant rock, the 16th-century Matignon Fortress, the historic lighthouse, and Port-Marie Beach. The islands are accessible by ferry from Granville (45 minutes, approximately €22 round trip). Ferry schedules depend on tides, so check before booking. Bring provisions as facilities are minimal, especially outside summer.