Art fairs are a dime a dozen in Chicago, but Expo presents the highest-quality work from the most far-flung places. This year you’ll see pieces from 140 top-notch galleries in 16 countries, among them New York’s David Zwirner (Jeff Koons, Richard Serra) and Paris’s Galerie Daniel Templon (Jean-Michel Basquiat, David LaChapelle). It runs September 17 to 20; tickets are $20 for one day and $30 for all weekend.