The Best Things to Do, See, and Eat in Acadia Acadia National Park is a one-of-a-kind Maine treasure that spreads across nearly half of Mount Desert Island on the Atlantic coast. The park features rocky beaches, pine forests, mountains, and expansive views of the ocean. Acadia is a perfect weekend destination, it's only a 3-hour trip from Portland and offers plenty to do. With a wide range of activities such as biking, hiking, kayaking, rock climbing, and swimming, it's no su