Atlantikwall Rayverside
Just to the west of town among the dunes (bus lines 68 and 69 stop outside), this is one of the best preserved parts of the German "Atlantikwall" defensive line, built to repel Allied invasion during World War II. You are free to explore around 60 bunkers, observation posts, and gun emplacements, all connected by 2 km (1.3 miles) of open trenches and underground passages. On the same site is Anno 1465, a re-creation of a long-vanished medieval fishing settlement that once stood on this spot.
