Opening April 5th and currently accepting reservations.

  • Castalia Marsh Retreat

    The cabins by the marsh.

  • Unique, handcrafted cabins.

  • RETREAT (noun):

    A peaceful and private place for resting in.

  • A Maritime Island Getaway

  • We're only a ferry ride away.

  • Our Story

    A Sea Captain's Tale.

Eco Cabins on Grand Manan

Welcome to "the cabins by the marsh". Whether you want to hike, whale watch, write, beach comb, photograph, bike, paint or simply relax with a cup of coffee or glass of wine, we can provide a perfect Maritime island getaway.


Choose from a variety of sizes and styles.

Retro RV Style.

Argosy Trailer

Sleeps 4, Limited Marsh View

Bigger is Better.

The Barn

Sleeps 9, Forest View


Birch Yurt

Sleeps 4, Limited Marsh View

A Couple's Paradise.

The Bird House

Sleeps 3, Marsh View

The Original.

Captain's Quarters

Sleeps 6, Marsh View

Cabin with a View.

Fern Alley

Sleeps 8, Marsh View

Tucked Away Tranquility.

The Lookout

Sleeps 4, Marsh View

Upgraded Camping.

Vintage Trailer

Sleeps 2-4, Forest View

Be in Nature.

Single Tent Site

Forest View, Camping


The Bay of Fundy's Rugged Charm

Located in the mouth of the Bay of Fundy straddling the border between New Brunswick and Maine, Grand Manan is a small island of 2500 people with a rich history of fishing and a naturally welcoming nature. With several hiking trails for all levels, sand and rock beaches, cliffs, lighthouses and much more, the island is perfect for nature lovers, artists, families and anyone looking to escape the world. We hope you'll join us for a Maritime Island Getaway!



The coastline of Grand Manan is varied and stunning; from sandy beaches perfect for walking to rugged, awe-inspiring cliffs, there is plenty to explore.


Our island is made up of several charming communities including small fishing villages with a rich history and proud heritage. They also provide everything you could need for your visit!


Our cabins are located on the marsh and in the woods, secluded from others to allow for privacy, peace and quiet. We know how valuable your time here is and aim to give you an experience that will leave you refreshed, relaxed and rejuvenated.


Castalia Marsh Retreat was brought to life in 1994 by Captain James Bates, who wanted to create a peaceful, environmentally friendly retreat for those looking to get away from the hustle and bustle of busy life. He has been creating magic here on Grand Manan ever since.

"What a wonderful slice of paradise on beautiful Grand Manan island. A great place to go to slow down, put your feet up and take in the view. We will totally be back soon. Thank you so much James. It's one special place for sure."
-Chrissie Paul-MacNeil
August 2020


A place to gather and celebrate many of life's biggest events, to connect with like-minded people, or to get to work in tranquility.


The Gathering Place can accommodate small weddings and events of under 50 people. There is a grassy area for wedding ceremonies or exercise retreats, a large kitchen and circular event space. Cabins can be rented out for guests.