Maine holds exactly one national park, and it’s the only one east of the Mississippi that was assembled almost entirely from land donated by private citizens rather than carved from existing federal territory. Acadia protects a rugged stretch of coastal Maine centered on Mount Desert Island, where granite peaks drop straight into the Atlantic and, for part of the year, the first sunrise in the continental United States lands on top of Cadillac Mountain.
Here’s the practical guide to Maine’s only national park: where it sits, what it costs, the numbers behind its unusual patchwork origins, and the wealthy conservationist whose personal fortune shaped much of what visitors still see today.
Acadia National Park Overview
| Category | Details |
| Location | Coastal Maine, primarily on Mount Desert Island |
| Counties | Hancock and Knox |
| Nearest town | Bar Harbor |
| Nearest airport | Hancock County–Bar Harbor Airport (BHB); Bangor International (BGR) |
| Established | July 8, 1916 (as Sieur de Monts National Monument); renamed Acadia in 1929 |
| Total area | About 49,000 acres across Mount Desert Island, Schoodic Peninsula, and Isle au Haut |
| Vehicle entrance fee | $35, valid 7 consecutive days |
| Acadia Annual Pass | $70 |
| International visitor surcharge (2026) | $100 per person, age 16+ |
| Coastline protected | Over 64 miles |
| Highest point | Cadillac Mountain, 1,530 feet |
| First national park | East of the Mississippi River |
Where Acadia National Park Is Located
Acadia sits along the mid-coast of Maine, roughly three hours north of Portland and about an hour from Bangor. The bulk of the park, around 30,000 acres, covers Mount Desert Island, connected to the mainland by a short causeway near the town of Trenton. From there, the park also stretches to the quieter Schoodic Peninsula on the mainland and to Isle au Haut, a remote island accessible mainly by mailboat.
Most visitors base themselves in Bar Harbor, a small town sitting right at the park’s edge that fills up fast during summer and peak fall foliage season. Bar Harbor’s own small airport is the closest option for flying in, though Bangor International offers more flight choices for a slightly longer drive.
What It Costs to Visit
Entry follows the standard structure used across most national parks. A private vehicle pass runs $35 and covers everyone inside for seven consecutive days. Motorcycles pay $30, and visitors arriving without a vehicle pay $20 per person.
Regular visitors typically buy the $70 Acadia Annual Pass, while anyone planning to visit several national parks during the year tends to go with the $80 America the Beautiful Pass. As of January 1, 2026, Acadia joined ten other high-traffic parks in charging non-U.S. residents an additional $100 surcharge per person, on top of the standard entrance fee, unless they hold a qualifying $250 non-resident annual pass. One useful cost-saving detail: the Island Explorer shuttle system running throughout the park and into Bar Harbor is completely free, funded largely by entrance fee revenue.
Facts That Make Acadia Unique
Acadia protects more than 64 miles of Maine’s rugged coastline, along with granite peaks, glacially carved ponds, and a mix of temperate and boreal forest that shifts noticeably with elevation and exposure to the Atlantic. Cadillac Mountain, the park’s highest point at 1,530 feet, is famous for catching one of the first sunrises in the country for part of the year, drawing crowds well before dawn during peak season.
The park’s carriage roads are another signature feature, 45 miles of crushed-stone paths built for horse-drawn travel in the early 20th century, funded almost entirely by John D. Rockefeller Jr. In the fall of 1947, wildfires tore through more than 10,000 acres of the park during what Mainers still call “the year Maine burned,” reshaping parts of the landscape permanently before restoration efforts, heavily supported by the Rockefeller family, brought the park back within a matter of years.
The History Behind Acadia National Park
The push toward federal protection began with George B. Dorr, a wealthy conservationist troubled by rapid development creeping into Bar Harbor in the early 1900s. Dorr spent over four decades of his life and much of his family’s fortune acquiring land for public preservation, eventually offering thousands of acres to the federal government. President Woodrow Wilson accepted, creating Sieur de Monts National Monument on July 8, 1916.
The designation changed twice in the years that followed. In 1919, the monument became Lafayette National Park, honoring the Marquis de Lafayette and making it the first national park established east of the Mississippi River. A decade later, in 1929, following the addition of land on the Schoodic Peninsula, the park took its current name: Acadia, a nod to the historic French name for the region. Much of what visitors experience today, the carriage roads, stone bridges, and layout of the Park Loop Road, traces directly back to Rockefeller’s involvement during the 1920s and 30s.
Frequently Asked Questions
Q1. Why does Maine only have one national park despite having so much protected coastline?
National park status requires a specific act of Congress, and while Maine has other protected natural areas, only Acadia carries the full “national park” designation, largely thanks to the sustained private philanthropy that assembled its land in the early 20th century.
Q2. Do I need a reservation to drive up Cadillac Mountain for sunrise?
Yes, during peak season, typically May through October, the National Park Service requires a separate vehicle reservation for driving up Cadillac Summit Road, especially for sunrise viewing. This is separate from your park entrance fee and should be booked well in advance.
Q3. Is the Island Explorer shuttle really free, and does it run year-round?
It’s free, but seasonal, typically running late spring through Columbus Day. Outside that window, you’ll need your own vehicle to get around the park and connect between Bar Harbor and the various trailheads.
Q4. Can I visit Acadia’s other sections, like Isle au Haut, without a boat of my own?
Yes. A passenger mailboat runs from Stonington to Isle au Haut seasonally, and it’s the primary way visitors without private boats reach that quieter, less-developed section of the park.
