Pilsen's art galleries are known collectively as the Chicago Arts District. There are 20 or so galleries, and they tend to be small, artist-run spaces with erratic hours. Many cluster around 18th and Halsted Sts. The best time to visit is on Second Fridays, when the galleries stay open late on the second Friday of each month.
Galleries welcome patrons with wine, snacks, and freshly hung paintings and photos. It's free, and takes place between 6pm and 10pm. Pick up a map at the office at 1821 S Halsted St.