Diamond's Edge Restaurant & Marina

Diamond’s Edge Restaurant & Marina is a waterfront destination on Great Diamond Island in Maine’s Casco Bay, offering dining, boating, events, and island stays in a distinctive coastal setting. Its full-service marina accommodates large sailboats and motorboats, while the restaurant serves casually elegant waterfront meals with food and drink menus for guests to enjoy by the water. The Diamond’s Edge Market provides grab-and-go options for picnics and exploring the island.

The property also hosts weddings, corporate retreats, meetings, and other gatherings, with event spaces suited to celebrations of up to 200 guests. Wedding services can include ceremony and reception arrangements, rehearsal dinners, and post-wedding brunches, alongside on-site dining and lodging options. Guests can stay at the historic Inn at Diamond Cove or rent a home in the community. Access to the island is available by ferry, water taxi, or private boat, making the journey part of the experience. Combining marina facilities, hospitality, and event services, Diamond’s Edge offers visitors a relaxed setting for dining, celebrations, and time on the Maine coast.