Mile High Music Festival, Denver, Colo.

Denver provides the city festival vibe without all the decibel restrictions, curfews and parking headaches. Last year, 43 acts played on five stages, showcasing a total of 220 performers, as over 90,000 fans danced on two soccer fields. "The backdrop of Rocky Mountains and downtown Denver is simply majestic and watching the sunset behind the main stage is unbeatable," says Chuck Morris, the event producer for AEG Live Rocky Mountain Region. Temperatures are in the high 90s—pack your bathing suit so you can play around the festival's water sculpture.

For more information: Mile High Music Festival

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