1 Big Sustainable Island

Events: Weddings, Families, Retreats

Maine glamping for large groups on Annabessacook Lake in Monmouth, Maine — near Winthrop!

Quick Answer: Events: Weddings, Families, Retreats is A private island on Annabessacook Lake for weddings, family reunions, retreats, or big gatherings. Sleep in whimsical stays, eat under event tents, paddle pristine water, and reset together in nature. Bring clothes, friends, off-leash pups & lots of food. We’ve got the rest: easy transport, comfy-real-beds, cooking options, hot shower & super clean, Maine Guide hospitality. All levels of nature lovers on Annabessacook Lake in Monmouth, Maine.

A private island on Annabessacook Lake for weddings, family reunions, retreats, or big gatherings. Sleep in whimsical stays, eat under event tents, paddle pristine water, and reset together in nature. Bring clothes, friends, off-leash pups & lots of food. We’ve got the rest: easy transport, comfy-real-beds, cooking options, hot shower & super clean, Maine Guide hospitality. All levels of nature lovers.

Guest Reviews from Revyoos — Showing 6 of 6 Reviews · Average 5.00 / 5

Angela August 23 2024
Rating: 5.0 / 5

Our family of 18 recently stayed on One Big Sustainable Island for 5 days and we had such an amazing experience! Kent and Heather were so helpful and responsive. We were able to just relax, swim, eat and enjoy the island without any worries. The different camp sites were all beautiful and had everything you could need for your time in the woods. We absolutely hope to come back in the future!

Owner Response
Thanks, Angela. It was a pleasure hosting you and your crew! We’re glad you all enjoyed the island time and we’re looking forward to seeing you again next year!
Helen July 21 2024
Rating: 5.0 / 5

I think I'm coming off the best weekend of the summer. If you need to take a break from your life/the world and reconnect with your childhood and nature, One Big Sustainable Island is a place you need to consider. Everything you need is there. If you want to be quiet, you can. If you want to be active, you can. The hosts are outstanding!!! If you like beautiful sunrises and sunsets, loons and eagles, turtles and fish, sunshine and breezes (it didn't rain while we were there, but if it did, it wouldn't have a negative impact). The spirit of the island is warm and welcoming for ALL.

Atiba July 19 2024
Rating: 5.0 / 5

We had a team of 15 cyclists who rode bikes from Florida to Maine over a five week period along the East Coast Greenway and we needed “a vacation” for one day & night and 1BSI was the “perfect retreat” site and the co-hosts are wonderful, kind & loving people. <br/>No one should not come to this place if they want the creature comforts and microwave amenities of 21st century life because this place & space is a dream getaway for anyone who wants peace & love with another Nature❤️

Owner Response
Thank you for your kind words, Atiba. Your crew was an honor to host!
Nickolas August 20 2023
Rating: 5.0 / 5

Kent made the process of getting to the and from the island extremely easy, from the wheelbarrows being pulled to and from our cabins, to the scenic boat ride over. He was extremely helpful with late guest arrivals, and with the firewood and ice packs. He was able to give you and your group the privacy you wanted while maintaining a very attentive and helpful experience. Will be going back.

Owner Response
Thank you, Nick! It was a pleasure hosting your family’s island adventure. We’re looking forward to seeing you all next year.
Alexander July 23 2023
Rating: 5.0 / 5

1 Big Sustainable Island is an experience like no other. As long as you go into it understanding you are going to be essentially camping on an island, the stay is immaculate. Kent was amazing, responsive and beyond helpful. He's an expert and takes pride in what he does. We had a large group on the island and loved every minute of it. If you want a memorable time, come to the island!

Owner Response
Thanks, Alex! It was a pleasure hosting you and your crew! Looking forward to the next time we meet!
Andrea July 26 2022
Rating: 5.0 / 5

We loved our time on the island! We stayed with two other families the last week of July-which turned out to give us three days of very different weather. We loved going down to swim, fishing, and exploring the flora and the fauna. We appreciated how attentive Kent was to getting us ice, checking in on us, and teaching us about the island and the area. We got our fishing licenses and the guys spent many hours fishing anywhere they could. If you travel during these times in the future you may want a small portable fan. Our 1 year old especially loved any visits from the dogs. Upon returning to our home in Ohio, our 4 year old declared "I don't want to live at our house, I only want to live on the island!" Thank you for sharing this beautiful place!

Owner Response
Thanks, Andrea. And thanks also for the kind words in the guest journal. I’m looking forward to seeing you folks again!
Source: Revyoos · Holding ID: 69504ab1ffb9c700816be6cd

Events: Weddings, Families, Retreats (whole island) - FAQs

Can 1BSI host weddings and large group events?

Yes! Our island has hosted weddings, team retreats, training workshops, and multi-day gatherings with logistics support.

What group sizes can you accommodate?

We've supported groups as small as 10 and as large as 85 for retreats, ceremonies, and corporate events.

Is event catering and vendor support available?

We can assist with coordinating caterers, stylists, and other vendors - just ask us as you're planning.