In the Southwest of France you can find a huge 40 km beach where war bunkers were position, very curious. The sea has already destroyed many of them and others are waiting to be destroyed. I've always seen them but i still haven't seen them all, although with diving equipment .... I don't know, I'll think about it.
This is a comment about a beach in Lege Cap Ferret, which is perfect for a hot day in July, offering long stretches of sand on which to lay down your towel. In the nearby area you'll find some forests and dunes, which give it its charm.
You cannot drive down to the beach. You have to walk a quarter of an hour on a sand road that ends with a mini "Dune du Pyla." Perhaps this is the reason that the place offers so much peace and space.