Just north of Biscarrosse in the Gironde department, Arcachon Bay is the highlight of the “Cote d’Argent” (Silver Coast), famous for its white-sand beaches, oyster farms, and year-round sunshine. Take in the views from the Dune du Pilat, the highest sand dune in Europe; relax on the sheltered beaches of the bay, then hop on the ferry to the Cap-Ferrat peninsula to hike or bike along miles of forest trails.