Rippleffect’s Cow Island is a unique 26 acre venue in Casco Bay surrounded by stands of oak, birch, and pine. We offer an array of activities for your enjoyment including sea-kayaking, zip-lining, outdoor meeting space, fabulous food and rustic accommodations.

Our Corporate outings and weekend retreats offer employees and adult groups the opportunity to relax and enjoy the camaraderie of shared group activities in an outdoor setting. Host a team development weekend using our challenge course, zip line and sea kayaks or a summer staff appreciation day. Cow Island also prides itself on our gourmet meals prepared by our Executive Chef in our full- service professional kitchen. He can create anything from a simple lunch to a traditional Maine lobster bake. We also have four yurts on the island that can accommodate up to 40 people comfortably as well as additional sleeping space in our historic bunkers. Cow Island’s rustic setting can accommodate a variety of groups and activities and has something for everyone.

Looking for a romantic and unique setting for your special day? Just a short boat ride from Portland's historic waterfront brings you and your guests to beautiful Cow Island where your special day becomes a unique and memorable experience. Imagine exchanging your vows in our intimate oak grove as you look out on to Casco Bay. Our secluded island has become a popular venue for the perfect destination wedding. We will take care of wedding details from tent rentals to transportation to catering. Wedding activities can include sea kayaking, use of our zip line, and the option for overnight accommodations for your wedding guests.

With Casco Bay as the backdrop our experienced staff will facilitate a program to meet your specific needs. All proceeds from Fort Lyon events and programs provide scholarships and operational support for our youth programs.