Receive for Free - Discover & Explore eNewsletter monthly with advance notice of special offers, packages, and insider savings from 10% - 30% off Best Available Rates at selected hotels. 
22 McKinley Court Portland, Maine 04109
The original property opened in 1910. A member of Historic Hotels of America since 2015.
Awards & Accolades
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 made to maintain the historical detail and preserve the original character of this secluded retreat, open seasonally between Memorial Day and Columbus Day.
The Inn at Diamond Cove has been named to these Historic Hotels of America Top 25 Lists
The 2024 Top 25 Historic Hotels of America Best of Adaptive Reuse List
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
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
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
Experience the cozy ambiance of roasting s’mores at the Firepit on the Inn’s grounds.
