22 McKinley Court Portland, ME 04109 (207) 805-9836

Located at Diamond Cove on Great Diamond Island, Portland Maine

Managed by:

Portland Harbor Hotel


Diamond Cove

Diamond Cove is an island resort community on Great Diamond Island Maine.
Amenities include:
  • 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 centurie 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
  • Maine Island YogaLocated downstairs in the Administration Building
  • Rippleffect  A youth and community development organization operating outdoor adventure programming out of Portland, Maine

Diamond Cove Event Calendar

Diamond Cove Map

Saturday April 21, 2018