Dorney Park & Wildwater Kingdom is an amusement and water park featuring seven roller coasters, other adult and children's rides, and a water park. With over 220 acres of rides specifically some of the world's most prominent roller coasters, including Steel Force, the ninth longest steel roller coaster in the world and the second longest on the U.S. East Coast. This park is seasonal, open May through their closing event, Halloween Haunt, at the end of October.