4. Red Rocks Park and Amphitheatre – Denver, Colorado

Red Rocks is another bucket-list music venue consistently rated among the best in the world. Set within ancient red sandstone formations in Colorado, the site is known as the only naturally occurring, acoustically perfect amphitheater in the world. If you’re into electronic music, notable performances have included deadmau5, STS9, Tchami, Kygo and the Global Dub Festival, but every genre is represented in this storied place. Check out the summer concert series under the stars, Yoga on the Rocks, the Colorado Music Hall of Fame and the hiking trails in the surrounding park.