Stay in the heart of Maine’s coastal history from the moment you embark from Portland’s Old Port district on a short voyage across beautiful Casco Bay. The Inn is set on Diamond Cove on Great Diamond Island and astride Diamond’s Edge, formerly an artistic retreat community rich in charm and history. Here is Fort McKinley, constructed in Portland Harbor in the late 19th and early 20th centuries to protect Maine's principal city. Select from 44 deluxe guest rooms and suites while the outdoor pool, fitness room and activity center and a short walk to Diamonds Edge Restaurant and the full service marina will keep you moving. For fun and sundries you’ll find the General Store, scenic trails, and Pebble Beach.