Noted among "10 Best: Outdoor Concert Venues you Shouldn't Miss!" The American Folklore Theatre, (aka Northern Sky Theater) is located within Peninsula State Park in Door County, WI http://www.10best.com/interests/travel-features/10best-outdoor-concert-venues-you-shouldnt-miss/
THE BEAUTIFUL PIONEER AMPHITHEATRE, carved out of and nestled into a natural basin in the majestic Palo Duro Canyon- comes alive in the summertime. It's a local favorite and a favorite of visitors. The back drop is gorgeous!