U.S. Air Force Academy outside Colorado Spring

The Cadet Chapel at the U.S. Air Force Academy in Colorado Springs, Colo. hosts between 500,000 and 1 million visitors annually. Photo courtesy of the U.S. Air Force Academy.

The Cadet Chapel at the U.S. Air Force Academy in Colorado Springs, Colo. hosts between 500,000 and 1 million visitors annually. Photo courtesy of the U.S. Air Force Academy.

The Cadet Chapel at the U.S. Air Force Academy in Colorado Springs, Colo. hosts between 500,000 and 1 million visitors annually. Photo courtesy of the U.S. Air Force Academy.