#3 – Summerfest
Held in Milwaukee, WI, Summerfest hosts over 800 acts over the course of 11 days, drawing in approximately 900,000 people. Though it has held the Guinness Book World Record for Biggest Music Festival since 1999, two other international festivals beat Summerfest in both the number of artists performing and the number of attendees. Artists from all genres perform at the festival. 2013’s headliner’s ranged from Fun to Tom Petty and the Heartbreakers, Jason Aldean to Pitbull, and many artists inbetween. The 2014 Summerfest will run from June 25-July 6.