Diamond Cove is an island resort community on Great Diamond Island Maine.
- Marina: For overnight dockage at the Marina in the summer, call 207-766-5694
- Fort McKinley: The largest of five military complexes constructed in Portland Harbor in the late 19th and early 20th centuries
- The Fort protected Maine's principal city in one of the most well defended harbors in the country
- Fitness Room: Located in the former Fort McKinley Post Exchange
- Yoga Studio: Located downstairs in the Administration Building