You leave Bordeaux behind and drive southwest through the pine-scented Landes, the Atlantic drawing nearer with each kilometer. Arrive at Arcachon’s wide promenade where Belle Époque villas and palm-lined avenues frame the sea; gulls wheel and the breeze pushes salt into your hair. A short ride later and the Dune du Pilat rises ahead—an enormous, mobile wall of sand separating the forest from the ocean. Climbing its slope puts you between two worlds: the restless Atlantic to the west and the quiet, green expanse of the Landes forest to the east.