The Arcachon Basin, and the town of Arcachon itself, is a popular tourist destination in southwest France. Here are some of the activities you can do there: Climbing the highest dune in Europe. 109 metres high, 2,700 metres long, 500 metres wide : the Dune du Pilat is a natural wonder! You absolutely must go there because, at the top, the 360° panorama of the Bay of Arcachon is breathtaking. Visit the Winter City because the districts of Arcachon change according to the seasons and the Winter City you can walk through the narrow streets which will take you to discover the beautiful houses and villas of the 19th century. Finally, you can visit the Lighthouse and the Pointe du Cap Ferret, two mythical places to better understand the geography of the Bay of Arcachon.