Bushkill Park Fun House Slide, Easton, PA Bushkill Park was established on April 1, 1900 by the Easton and Nazareth Railway Company. It officially opened July 3, 1902. Bushkill Park served the community as a family entertainment center and amusement park for families, companies and organizations of the Lehigh Valley, in PA and Warren County, NJ. With magnificent large trees offering summer shade to the nine pavilion areas and kiddy land, Bushkill Park is a refuge of quiet excitement with a family environment.