Located within walking distance of Miller’s Landing, Philip S. Miller Park offers something for everyone. The 300-acre activity complex includes the Millhouse events center, an outdoor amphitheater, the Miller Activity Complex field house, the Challenge Hill outdoor staircase, an adventure playground as well as an interconnected network of trails. Through a public-private partnership with Castle Rock Zip Line Tours, zip lines and adventure courses are also available. There is fun and entertainment for everyone at Miller Park in Castle Rock.