A mountainous forested area along the Atlantic coast of northeastern Maine, Acadia National Park covers 60 square miles (155 square km). It primarily is on Mount Desert Island, but also includes smaller islands and a part of Schoodic Peninsula on the mainland. Its outstanding features include a fjord, Cadillac Mountain, and the Abbe Museum of Stone Age Antiquities. The area originally was known as Lafayette National Park, established in 1919, and was renamed Acadia 10 years later. Much of the land was a donation from John D. Rockefeller, Jr.