When: All summer long and into fall
Where: 18300 W. Alameda Parkway, Morrison, CO 80465
What is it: Red Rocks amphitheater is the only naturally-occurring, acoustic amphitheatre in the world. The Red Rocks amphitheater can sit up to 9,525 people. It holds events throughout the summer such as concerts, films and exercise sessions. Some of the bands performing are Modest Mouse (May 13, but already sold out), Khalid (May 14), Five Finger Death Punch (May 29), and the Colorado Symphony Orchestra (May 31). .
Cost: $25 to $500 (varies with event)
More info: go to http://amphitheatremorrison.com/redrocks/index.php or http://www.redrocksonline.com/