Acadia National Park

About half of the island is part of Acadia National Park. With 18 miles of trail, access to both salt water and fresh, coupled with a location that self-limits the number of visitors… Isle au Haut’s Acadia is always more tranquil than her mainland counterparts. Comparatively quiet in the summer, the Park can seem like one’s own private kingdom in the off-season months, November – April. Website.