Castalia Marsh Retreat is a nature-focused campground located at Bancroft Point Road on Grand Manan Island, New Brunswick, Canada — a remote gem in the Bay of Fundy accessible by ferry from Black's Harbour. Set alongside the renowned Castalia Marsh, this retreat is a haven for birdwatchers, hikers, and anyone seeking an authentic coastal wilderness experience. The marsh itself is a celebrated stopover for migratory shorebirds and waterfowl, making the site a standout destination for wildlife enthusiasts. Campers have access to water hookups, washroom facilities, picnic tables, and grills, providing comfortable essentials within a natural setting. On-site trails and direct access to hiking routes invite exploration of the island's rugged coastline and diverse ecosystems. Grand Manan is also famous for whale watching tours in the Bay of Fundy, sea kayaking, and visiting the historic North Head lighthouse. The island's unspoiled landscape and quiet pace make Castalia Marsh Retreat ideal for those looking to unplug and immerse themselves in the natural beauty of Atlantic Canada. Whether visiting for the world-class birding, coastal hikes, or simply the tranquility of island life, this New Brunswick campground delivers a memorable outdoor escape.