1. Lollapalooza

#1 Festival
After drawing 90,000 music fans a day—its largest crowd to date—to Grant Park in 2011, Lollapalooza returned to the urban park this past weekend. Among the 130 acts on the line up were the Red Hot Chili Peppers and Florence & the Machine. Next: August 2-4, 2013
After drawing 90,000 music fans a day—its largest crowd to date—to Grant Park in 2011, Lollapalooza returned to the urban park this past weekend. Among the 130 acts on the line up were the Red Hot Chili Peppers and Florence & the Machine. Next: August 2-4, 2013
Photo: Courtesy of Lollapalooza
2. Chicago Air and Water Show

#3 Festival
The iconic local tradition—scored with the sounds of thrillingly loud engines—lures two million spectators to the lakefront. In the corporate hospitality area of the Chicago Air and Water Show, companies such as Shell and Boeing host parties. Next: August 18-19, 2012
The iconic local tradition—scored with the sounds of thrillingly loud engines—lures two million spectators to the lakefront. In the corporate hospitality area of the Chicago Air and Water Show, companies such as Shell and Boeing host parties. Next: August 18-19, 2012
Photo: Courtesy of City of Chicago