Meetings & Events on Great Diamond Island

A scenic Island venue just off the coast of Portland, Maine

Purposeful Meetings Meet Coastal Escape

Just off the coast of Portland, Diamond’s Edge offers a distinctive setting for meetings and events on Great Diamond Island. Accessible by a scenic ferry ride across Casco Bay, our island venue blends coastal beauty with thoughtful event spaces—creating gatherings that feel elevated, memorable, and refreshingly different.

From corporate meetings and nonprofit events to milestone celebrations and private gatherings, Diamond’s Edge provides flexible venues and a setting that naturally brings people together.

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Meetings & Event Space

  • McKinley Grove Sailcloth Tent Site

    A stunning, all-weather venue for 75–200 guests, offering panoramic water views and a quintessential Maine coastal backdrop. Ideal for lobster bakes, receptions, mitzvahs, and milestones, the sailcloth tent blends open-air elegance with all-weather reliability.

  • The Art Gallery

    A historic space with vaulted ceilings and exposed beams, ideal for receptions, baby and bridal showers, workshops, and intimate gatherings for 25–60 guests.

  • The Admin Building

    A professional meeting space designed for strategy sessions and smaller group discussions (10–30 guests).

  • Outdoor Spaces

    Open lawns and waterfront island spaces create a relaxed setting for cocktail hours, lawn games, casual celebrations, and unstructured moments to gather, connect, and unwind.

Events We Host

From family milestones to professional gatherings, Diamond’s Edge hosts a wide range of events on Great Diamond Island—just a short ferry ride from Portland, Maine.

Social & Family Celebrations

  • Baby Showers

  • Bridal Showers

  • Bat & Bar Mitzvahs

  • Rehearsal Dinners

  • Post-Wedding Brunches

  • Family Reunions

  • Retirement Parties

  • Celebrations of Life

  • Weddings & Receptions

Corporate & Professional Events

  • Corporate Celebrations

  • Employee Appreciation Events

  • Offsite Meetings

  • Corporate Retreats

  • Incentive Meetings

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Frequently Asked Questions

  • There are two primary ways to get to Diamond Cove

    1. Fogg's Water Taxi -For a more private and direct transport of your party of up to 6 guests.

    Water Taxis are available in Portland and reservations are strongly recommended. Please contact Fogg's Water Taxi directly to reserve your transportation.

    Visit Fogg's Water Taxi website or call 207-415-8493.

    2. Casco Bay Ferry- For a more scenic and relaxed experience. 

    Ferry service is provided by Casco Bay Lines. The ferry terminal is located at the Maine State Pier, 56 Commercial Street, Portland, ME. While we are located on Great Diamond Island, please ensure you are purchasing a ticket to the Diamond Cove dock. The most updated schedule can be found on the Casco Bay Lines website.-For a more private and direct transport of your party of up to 6 guests.

  • Yes. Our culinary team offers customized catering options designed to complement each event, from casual gatherings to formal receptions.

  • No. Diamond’s Edge Restaurant & Marina is located on Great Diamond Island — a car-free island just off the coast of Portland, Maine. Guests can park in the city and enjoy a scenic ferry ride across Casco Bay.

  • The largest area is the McKinley Grove Event Site, an expansive lawn area that can host up to 200 attendees for outdoor summer celebrations. The Patio at Diamond's Edge Restaurant can seat up to 50 people.

Plan Your Event

Whether you’re organizing a meeting, hosting a celebration, or planning a special gathering, Diamond’s Edge offers a unique island venue just minutes from Portland, Maine.