One of the city's best cultural bargains, this music festival offers a series of free outdoor classical music concerts from June through August. The symphony, along with internationally known musicians and singers, performs in the gorgeous Frank Gehry-designed Pritzker Music Pavilion in Millennium Park. Featuring Gehry's signature sinuous lines, the pavilion is surrounded by dramatic ribbons of curved steel. The Grant Park Symphony not only looks better than ever, but it sounds great, too -- thanks to a state-of-the-art sound system. Concerts are held Wednesday, Friday, and Saturday, with most performances beginning at 6:30pm (7:30pm on Sat). Seats in the front of the pavilion are reserved for subscribers, but the back rows are available on a first-come, first-served basis. There's also plenty of lawn seating, so bring a blanket and enjoy a picnic dinner with a view of the skyline as a backdrop.