Acadia National Park is a 47,000-acre (19,000 ha) protected area located in the U.S. state of Maine. It was established in 1916 as the first national park east of the Mississippi River, and the only one in the Northeastern United States. The park is primarily located on Mount Desert Island, but it also encompasses smaller islands such as Isle au Haut and Schoodic Peninsula on the mainland.

Acadia National Park offers stunning natural landscapes, including rocky coastlines, lush forests, and towering mountains. Visitors can explore the park's diverse ecosystems through hiking trails, scenic drives, and water-based activities such as kayaking and boating. One of the park's most popular attractions is Cadillac Mountain, which stands at 1,530 feet (466 m) and offers sweeping panoramic views of the surrounding landscape.

In addition to its natural beauty, Acadia National Park also has a rich cultural history. The park was originally home to the Wabanaki people, and later became a popular summer destination for wealthy families such as the Rockefellers and Vanderbilts. Visitors can learn about the area's history through guided tours and exhibits at the park's visitor centers.

Acadia National Park is open year-round, but the peak season for visitation is during the summer months. It is a popular destination for outdoor enthusiasts, families, and anyone seeking to experience the beauty of the Northeastern United States.