Step into U.S. military history at Fort Flagler Historical State Park on the northern tip of Marrowstone Island. Tour and explore a significant coastal defense fort established more than a century ago to guard the entrance to Puget Sound.
Built in the late 1890s and manned during World War I, World War II and the Korean War, Fort Flagler now features a military museum and gift shop. The park offers guided tours of the gun emplacements and other facilities during the summer. Or find the batteries on your own and wander through them at leisure.
Fort Flagler activities include hiking, boating,