Red Rocks Amphitheatre: Originally known as the Garden of Angels, the Amphitheatre can be found in the foothills of the Rockie Mountains, fifteen miles west of Denver.

"In the early 1900's, John Brisben Walker had a vision of artists performing on a stage nestled into the perfectly acoustic surroundings of Red Rocks. Walker produced a number of concerts between 1906 and 1910 on a temporary platform; and from his dream, the history of Red Rocks as an entertainment venue began.
In 1927, George Cranmer, Manager of Denver Parks, convinced the City of Denver to purchase the area of Red Rocks from Walker for the price of $54,133. Cranmer convinced the Mayor of Denver, Ben Stapleton, to build on the foundation laid by Walker. By enlisting the help of the federally sponsored Civilian Conservation Corps (CCC), and the Work Projects Administration (WPA), labor and materials were provided for the venture.
Denver architect Burnham Hoyt designed the Amphitheatre with an emphasis on preserving the natural beauty of the area. The plans were completed in 1936, and the Amphitheatre was dedicated on June 15, 1941, though the actual construction spanned over 12 years.
In 1947, the first annual Easter Sunrise Service took place. Since then, Red Rocks Amphitheatre has attracted the best performers to its stage."

from: Redrocksonline.com