Designated a "Grand Site de France" in 2011, the Baie de Somme (37 900ha) has a policy of ecological preservation and is committed to developing tourism in a an eco-responsible way, in keeping with its natural and cultural wealth. From Fort-Mahon to Le Hourdel, you can enjoy the Marquenterre Ornithological Park, explore Le Crotoy and its landsailing, then the charm of the little port of St-Valéry-sur-Somme. The bay is sometimes bathed in an almost surreal light and the range of activities available is vast.