The largest gun battery ever built in the US: a 1942 emplacement for two 16-inch guns stretching over 500 feet through the middle of Peaks Island, guarding Casco Bay. Now owned by the Peaks Island Land Preserve, its dark corridors and graffiti-covered casemates are open to anyone who makes the ferry ride from Portland — bring a light.
Vestige documents abandoned & historic places for education and preservation. Always obtain permission before visiting and follow local law.