Fort Miles Heritage Trail

The Fort Miles Heritage Trail explores the extensive World War II coastal defense infrastructure built at Cape Henlopen between 1941 and 1945 to protect Delaware Bay and the vital shipping lanes supplying East Coast ports from potential German naval attack. Fort Miles was a major component of the Harbor Defenses of the Delaware, mounting massive 16-inch guns capable of firing 2,700-pound projectiles over 25 miles, along with numerous 12-inch, 8-inch, and smaller-caliber batteries. The trail visits Battery 519 — now a restored gun emplacement housing a 16-inch gun — as well as a series of massive concrete observation and fire control towers that rise incongruously from the coastal forest, designed to triangulate the positions of enemy vessels offshore. These towers, standing 75 feet or more, are the most visually striking remnants of the fort and are visible from miles away across the flat coastal plain. The Fort Miles Historic Area Museum, housed in a restored fire control bunker, displays extensive exhibits on the garrison's equipment, daily life, and the Atlantic Theater naval campaign. The trail loops through the dune complex adjacent to the battery positions, providing context for the strategic importance of the cape's position commanding the Delaware Bay entrance. German U-boats operated in nearby waters, and the fort's guns were prepared for action throughout the war, though no enemy ships were ever engaged.