One Big Sustainable Island


Experience a Maine island retreat, close to nature -- close to home!

1BSI is a great venue for a group gathering, ceremony, or weekend event. We have experience managing a variety of functions from a very simple camping weekend for a group of 10 family members to a weekend conference for a group of 85. Weddings, trainings, and team building retreats have all been a great success because of the unique island location and our logistical support.

To find out more about how we can support your specific event needs on 1BSI, call us! 207.752.1190

Kent Teaching
Group banquet.
Group on steps.


Group retreat.
Creating a path.