The Inn at Diamond Cove

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The Inn at Diamond Cove is part of a small, island community called Great Diamond Island off the coast of Portland, Maine. Once pivotal in the defense of the United States, Army structures that were once scattered over the island have been restored and are now homes with wonderful historical detail and character. Prior to being the site for an Army base, Great Diamond Island featured a famous artistic retreat. American literary greats such as Henry Wadsworth Longfellow and Harriet Beecher Stowe spent time experiencing quiet island living there.

After several years of careful restoration, The Inn at Diamond Cove reopened in 2015 with a revitalizing new layout boasting 44 deluxe guestrooms and suites with balconies. All suites maintain a New England charm with a fireplace, parlor, and separate dining area. Much effort has been done to maintain the historical detail and preserve the original character of this secluded retreat, open seasonally between Memorial Day and Columbus Day.

Location Map

Tour the wooded public areas of Great Diamond Island by bike or electric golf cart as cars are not permitted on the island.


Discover how in the 1890s, the federal government erected military buildings on Great Diamond Island as part of the country’s coastal defense system.


Explore tiny lighthouses, such as the 20 ft. tall Bug Light, shown here, or Great Diamond Island's 6 ft. Echo Point Lighthouse, the smallest lighthouse registered with the U.S. Coast Guard.


Experience the cozy ambiance of roasting s’mores at the Firepit on the Inn’s grounds.


Taste the deliciously sweet lobster found in Maine waters, catching these crustaceans has been a way of life for generations of New Englanders.

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