Acadia National Park, established in 1929, is one of the most beautiful national parks in the nation. This 47,000-acre nature sanctuary has more than 155 miles of marked hiking paths, 45 miles of drivable roadways, and is the fifth smallest National Park in the nation, but one of the 10 most popular to visit, receiving around 3 million visitors annually. Here’s everything you need to know about planning a visit to this breathtaking outdoor escape.