Red Rocks Amphitheatre is an open-air amphitheater in the western United States near Morrison, Colorado, approximately ten miles (16 km) southwest of Denver. It is owned and operated by the city of Denver. In addition to several other large sandstone formations nearby, the venue is best recognized by its two massive monoliths, named "Ship Rock" and "Creation Rock", as well as the smaller "Stage Rock", which together flank its 9,525 capacity seating area and naturally form the amphitheater. While the venue is primarily known for hosting concerts and music festivals, other events of various types and sizes are held throughout the year.