Acadia National Park is a National Park located in the U.S. state of Maine. It reserves much of Mount Desert Island, and associated smaller islands, off the Atlantic coast. The park includes mountains, an ocean shoreline, woodlands, and lakes. In addition to Mount Desert Island, the park comprises much of the Isle au Haut, parts of Baker Island, and a portion of the Schoodic Peninsula on the mainland.

Cadillac Mountain, named after the French Explorer of the same name, is on the eastern side of the island. Its green, lichen-covered, pink granite summit is one of the first places in the United States to see the sunrise. Miles of carriage roads were originally built by Rockefeller, Jr. The mountains of Acadia National Park offer hikers and bicycle riders views of the ocean, island lakes, and pine forests.