1 Big Sustainable Island

Island Tree House Glamping

Unique treehouse glamping experience on Annabessacook Lake in Monmouth, Maine — near Winthrop.

Quick Answer: Island Tree House Glamping is The Oaktagon Tree House is what happens when you decide to live with the forest instead of just visiting it. Built around a living red oak (her name is Annie), this octagonal tree house invites you up into the canopy, where birds provide the soundtrack and the lake glimmers below. Perched on a 14-acre island just a half-mile from shore, it’s a place to slow down, look outward through leaves and branches, and remember what it feels like to be held by trees on Annabessacook Lake in Monmouth, Maine.

The Oaktagon Tree House is what happens when you decide to live with the forest instead of just visiting it. Built around a living red oak (her name is Annie), this octagonal tree house invites you up into the canopy, where birds provide the soundtrack and the lake glimmers below. Perched on a 14-acre island just a half-mile from shore, it’s a place to slow down, look outward through leaves and branches, and remember what it feels like to be held by trees.

Guest Reviews from Revyoos — Showing 10 of 142 Reviews · Average 4.98 / 5

Abigayle Morrison October 05 2025
Rating: 5.0 / 5

We had an amazing weekend getaway here! Absolutely stunning location, such cute towns nearby, had so much fun on the island, cycling and running, and exploring the cute towns nearby.

Jeremy September 28 2025
Rating: 5.0 / 5

Stay was amazing, Kent is a great host who really came through multiple times when we needed him. Anytime we messaged always responsive and had plan of action. 20/10 would recommend this place. Beautiful views and even better people. Can’t wait for our next visit to the island!

Zayne September 23 2025
Rating: 5.0 / 5

Our stay was exactly how we imagined and just what we needed. Quiet, private, and a beautiful weekend in the woods with everything needed to make it a perfect stay. Kent and his team were incredibly responsive with anything we needed. If you’re someone who likes camping and disconnecting from everyday life in a beautiful location, this is the place!

Erica September 12 2025
Rating: 5.0 / 5

A magical, private place in the woods! Beautiful spot, Beautiful lake with lots of fishing! Wonderful kayaks fishing poles and canoes provided as well. The host was an absolute pleasure! Friendly, knowledgeable and always responded quickly. We will be back and we will tell all of our friends! Thank you for a wonderful peaceful stay!

Christa September 08 2025
Rating: 5.0 / 5

This is the second year my friends and I have stayed on the 1BSI for our summer retreat. It's incredibly peaceful and one of the most unique stays we've ever seen.

Megan August 27 2025
Rating: 5.0 / 5

A really special place with a dedicated host. If you're looking to reconnect with nature, I highly recommend this stay.

Diane August 21 2025
Rating: 5.0 / 5

Kent was the perfect host! Responsive, helpful, kind and knowledgeable! We had an amazing time!

Valerie August 17 2025
Rating: 5.0 / 5

The island was one of one, great experience, communication was great, very peaceful, very fun.

Alexander August 03 2025
Rating: 4.0 / 5

It is a really nice place to disconnect.<br/>Everything is as described, enjoy your coffee at the lake without any people around. <br/>Everything is well thought and super organized.

Desiree L. October 01 2025
Rating: 2.5 / 5

Sunset/rise were so perfect, and we got a special appearance of a double rainbow during our stay!

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Source: Revyoos · Holding ID: 69504ab1ffb9c700816be713

Oaktagon Treehouse FAQs

What's special about this treehouse stay?

Sleeping in the canopy offers a new perspective - birds at eye level, lake breezes through the trees, and a quiet sense of being tucked into the forest.

Is this stay suitable for kids or pets?

Who doesn't love a tree house! Kids and pets are welcome, and there's lots of space for them.

What's included in the stay?

Comfortable sleeping arrangements, private bathroom, firewood, cooking essentials, canoe/kayak access, and full use of island trails, a hammock swim dock, boat dock, swimming spots, and shared beach and shower.

How do I access this stay?

Arrive at the island by paddle, ferry, or boat, then follow marked trails to your Oaktagon Treehouse.