The EDGE (formerly Castle Rock Adventure Park) is an outdoor excitement center on the front range of the Rockies for adventurers of all ages who want to experience life on the edge. Fly on a top Colorado zipline tour, or tackle the Sky Trek to experience the playground in the sky. Challenge gravity on the Adventure Tower’s vertical climbs and exhilarating jumps. Or unleash the warrior inside on our Ninja Course. Whatever you choose, you’ll find epic adventures just a short drive from Denver, Colorado Springs, or Boulder.