Philip S. Miller Park is a regional destination that truly has something for everyone. The 300-acre park includes the Millhouse events center, an outdoor Amphitheater, the Miller Activity Complex, the Challenge Hill outdoor staircase, an adventure playground and an interconnected trail network.
The Castle Rock Museum is housed in a structure which by any account is its prime artifact. The Denver & Rio Grande Railroad had just been built between Denver and Old Colorado City (Colorado Springs) in 1871. It was the first narrow gauge line in the United States and was built by, General William Jackson Palmer. The Town of Castle Rock was designated the county seat for the newly realigned Douglas County in 1874.