Cape Henlopen State Park - Lying amidst rolling sand dunes, on a high bank overlooking the Atlantic Ocean, is the Fort Miles Historical Area, home of the Fort Miles Museum. The central features of the museum include Battery 519, six barracks buildings, a fire control tower, an orientation building, and the Fort Miles Artillery Park. The museum tells the story of Fort Miles, a key piece of our nation's coastal defense, from World War II through the early 1970’s. Walking tours/bike tours.