Acadia National Park was established in 1919 as Lafayette National Park — the first national park east of the Mississippi River — and renamed Acadia in 1929. Located on Mount Desert Island and surrounding areas along the Maine coast, the park protects roughly 49,000 acres of granite-peaked mountains, rocky shoreline, woodlands, and glacially carved lakes. George B. Dorr and Charles W. Eliot led the private land conservation effort that made the park possible, with John D. Rockefeller Jr. later financing the construction of 45 miles of carriage roads. The park's diverse ecosystems mark the overlap of northern boreal and eastern deciduous forests, supporting over 1,100 plant species and serving as a critical stopover for migratory birds along the Atlantic Flyway.
📚 Learn More at NPSHistory.com →In 1916, George B. Dorr—known as the 'Father of Acadia'—donated thousands of acres from Mount Desert Island to create Sieur de Monts National Monument, the first national park east of the Mississippi River.
First national park established east of the Mississippi River. George Dorr spent most of his adult life overseeing the park's formation and expansion after visiting in 1868. Renamed Acadia National Park in 1929; became a major Northeast tourist destination.
The content at Acadia National Park has been confirmed removed. What was once publicly accessible historical interpretation — developed over years by professional historians and park staff — has been taken down with no public record of what was changed or why.
Why this matters: Acadia demonstrates how private conservation efforts can transform into major protected landscapes, representing the most-visited park in New England.
Exhbits in the Nature Center in Acadia NP.
In 1916, George B. Dorr—known as the 'Father of Acadia'—donated thousands of acres from Mount Desert Island to create Sieur de Monts National Monument, the first national park east of the Mississippi River.
First national park established east of the Mississippi River. George Dorr spent most of his adult life overseeing the park's formation and expansion after visiting in 1868. Renamed Acadia National Park in 1929; became a major Northeast tourist destination.
The content at Acadia National Park has been confirmed removed. What was once publicly accessible historical interpretation — developed over years by professional historians and park staff — has been taken down with no public record of what was changed or why.
Why this matters: Acadia demonstrates how private conservation efforts can transform into major protected landscapes, representing the most-visited park in New England.
Tripods at Cadillac Mountain in Acadia NP
In 1916, George B. Dorr—known as the 'Father of Acadia'—donated thousands of acres from Mount Desert Island to create Sieur de Monts National Monument, the first national park east of the Mississippi River.
First national park established east of the Mississippi River. George Dorr spent most of his adult life overseeing the park's formation and expansion after visiting in 1868. Renamed Acadia National Park in 1929; became a major Northeast tourist destination.
The content at Acadia National Park has been confirmed removed. What was once publicly accessible historical interpretation — developed over years by professional historians and park staff — has been taken down with no public record of what was changed or why.
Why this matters: Acadia demonstrates how private conservation efforts can transform into major protected landscapes, representing the most-visited park in New England.
Tripods at Great Meadows in Acadia NP
In 1916, George B. Dorr—known as the 'Father of Acadia'—donated thousands of acres from Mount Desert Island to create Sieur de Monts National Monument, the first national park east of the Mississippi River.
First national park established east of the Mississippi River. George Dorr spent most of his adult life overseeing the park's formation and expansion after visiting in 1868. Renamed Acadia National Park in 1929; became a major Northeast tourist destination.
The content at Acadia National Park has been confirmed removed. What was once publicly accessible historical interpretation — developed over years by professional historians and park staff — has been taken down with no public record of what was changed or why.
Why this matters: Acadia demonstrates how private conservation efforts can transform into major protected landscapes, representing the most-visited park in New England.
Exhibit at Schoodic Institute in Acadia NP
In 1916, George B. Dorr—known as the 'Father of Acadia'—donated thousands of acres from Mount Desert Island to create Sieur de Monts National Monument, the first national park east of the Mississippi River.
First national park established east of the Mississippi River. George Dorr spent most of his adult life overseeing the park's formation and expansion after visiting in 1868. Renamed Acadia National Park in 1929; became a major Northeast tourist destination.
The content at Acadia National Park has been confirmed removed. What was once publicly accessible historical interpretation — developed over years by professional historians and park staff — has been taken down with no public record of what was changed or why.
Why this matters: Acadia demonstrates how private conservation efforts can transform into major protected landscapes, representing the most-visited park in New England.
Wayside at Cadillac Mountain in Acadia NP
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