In 1913, Pres. Woodrow Wilson set aside ,6000 acres (within what is now Acadia National Park) as Sieur de Monts National Monument. With the acquisition of more land and private support and funding, in 1919 Pres. Wilson signed an act establishing Lafayette National Park. In 1929 the parks name was changed to Acadia.

Acadia National Park was established to protect the area's spectacular scenic values, Maine's rock bound coast, its coastal and its offshore islands as characterized by the geologic features, natural history and the native plant and animal life.

Who built the carriage roads Who had the vision of a national park on this popular vacation coast land This national park is unusual because it was neither carved out of public lands nor bought with public funds. It was envisioned and donated through the efforts of private citizens. Many people loved Mount Desert Island, Schoodic Peninsula and the nearby islands. Maine residents and summer visitors alike donated their time and resources to preserve Acadia's beauty. George B. Dorr and Charles W. Eliot, a former president of Harvard University, saw danger of development and acted to avoid them. John D. Rockefeller, Jr., also played a critical role. He built the carriage roads and gave more than 11,000 acres, about one-third of the park's area, to what became known as Acadia National Park.

Since 1986, the park has purchased small tracks of land and easements to define its permanent boundary and to preserve scenic values. Many landowners today continue in the tradition of the park's founders by placing easements on their property that limit development.