The first and oldest amusement park in Pennsylvania is Idlewild, located in the Laurel Highlands of Ligonier. Established in 1878 by Judge Thomas Mellon (founder of the Mellon Bank), Idlewild was originally designed as a "picnic grove" to encourage people to use the Ligonier Valley Railroad. It is not only the oldest in the state but also the third-oldest operating amusement park in the United States. Unlike many modern "corporate" parks, Idlewild has maintained a rustic, wooded atmosphere throughout its nearly 150-year history. It is famous for its "Story Book Forest" and its integration of the natural mountain landscape into its ride designs. While other Pennsylvania giants like Kennywood (1898) and Hersheypark (1906) are more famous for their massive steel coasters, Idlewild holds the historical crown. In 2026, it is recognized as a "National Treasure" of the amusement industry, particularly beloved for its focus on families with young children and its preservation of the "trolley park" era of American leisure.