What is the Milwaukee fest?

Summerfest, also billed annually as “The World’s Largest Music Festival,” is an outdoor music festival held every June and early July in Milwaukee, Wisconsin. Summerfest's stages offer live music concerts on 12 grounds for 11 days over three consecutive weekends—Thursday evenings thru Sunday nights with most days ending near or after midnight—along Lake Michigan’s shore (on what Milwaukeeans informally call the Summerfest Grounds, a lakefront peninsula).