When we hear about interesting places and unique attractions in Maine, we’re rarely surprised. Vacationland is full of things like this – from unknown lakes to hard-to-find swimming holes, there is so much to discover in Maine that it seems like the only real way to do it is to live here for years. But, these discoveries are still exciting and we’re happy to bring you one of those today. If you’ve always dreamed of having your own private island retreat, you’ll want to check out One Big Sustainable Island.

One Big Sustainable Island (or, 1BSI as it's sometimes called) is located on Annabessacook Lake in Monmouth Maine.
1 Big Sustainable Island / Facebook
The island is comprised of 14 acres that are said to have been inhabited in some way or another for thousands of years.
The island retreat, is operated by registered Maine guides, Jo and Kent, along with their furry friend "Shadow."
1 Big Sustainable Island / Facebook
The island is run as a non-profit organization and was created to help inspire those who are curious and aware, to explore our earth in a sustainable way. It's virtually impossible to avoid being motivated to revel in the outdoors in the beautiful environment on the island.
The island hosts a variety of adventures and retreats.
1 Big Sustainable Island / Facebook
Throughout the year, One Big Sustainable Island offers opportunities for sustainable, off-grid vacation adventures. You'll also have the opportunity for guided tours of the island and lake, as well as half-day, full-day, overnight and weekend retreats.
Visitors can enjoy campsites and treehouses!
1 Big Sustainable Island / Facebook

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Check out the newer, canopy tree dome.
1 Big Sustainable Island / Facebook
You'll love being close to nature and feeling at peace with the surroundings that have been created here.
1 Big Sustainable Island / Facebook
1 Big Sustainable Island / Facebook
They do a fantastic job catering to groups who want to explore the world around them, or simply give back.
1 Big Sustainable Island / Facebook
From adults to children, schools to religious groups...
- everyone is welcome at One Big Sustainable Island!
1 Big Sustainable Island / Facebook

For more information, click here to see the One Big Sustainable Island website or click here for their Facebook page. You can speak to them to ask specific questions by calling them on (207) 512-2524.

Loving the idea of island life? Click here to check out some other islands you’ll find (and fall in love with!) in Maine.

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