Acadia

Having the distinction of being the only national park in the northeastern United States brings Acadia a lot of visitors. They come to climb 1,532-foot Cadillac Mountain, the highest point on the Atlantic north of Rio, to bike along the 45 miles of crisscrossing carriage paths, which were originally commissioned by mogul John D. Rockefeller Jr., and to drive along Park Loop Road. In the summer Acadia can get downright crowded. Luckily there are 170 miles of opportunity for the hiker to hide in this 35,000-acre park.
Acadia is located mostly on Mount Desert Island, a curled shrimp of an island off of Maine's mid-coast. The coast is delightfully rugged and rocky. America has too few spots to climb near the sea on the East Coast, but Acadia does its best to make up for the lack of venues.