"The area includes mountains, an ocean shoreline, woodlands, and lakes. In addition to Mount Desert Island, the park comprises much of the Isle au Haut, a small island to the southwest of Mount Desert Island and parts of Baker Island, also nearby. A portion of Schoodic Peninsula on the mainland is also part of the park. In total, Acadia National Park consists of 30,300 acres (47 square miles or 123 km²) on Mount Desert Island, 2,728 acres (4.6 square miles or 11 km²) on Isle au Haut and 2,266 acres (3.5 square miles or 9.2 km²) on the Schoodic Peninsula."
Acadia's other claim to fame is the tallest mountain on the East Coast of the Americas, north of Brazil - Cadillac Mountain. It stands 1530 feet tall.