Fort Mears, built in 1941, is one of the National Historic Landmarks in Dutch Harbor commemorating the Aleutian campaign during WWII.
Fort Mears was attacked by the Japanese in 1942. Several machine-gun pillboxes still exist along many of the nearby beaches. Efforts are under way to establish the site as a National Park.
Of special interest is the Museum of the Aleutians, which is built on the foundation of a military warehouse.