Soon after the MCA settled into its home behind Water Tower Place in 1996, monumental sculptures began popping up, adding a dash of the surreal to the museum’s entrance plaza. So far, a dozen artists have been showcased there. In 2005, a car and its camper seemed to crash through the pavement from below in Michael Elmgreen and Ingar Dragset’s Short Cut. Two years ago, Martin Creed’s gigantic rotating neon sign paid homage to mothers everywhere. The current sculpture—a 20-foot-tall fiberglass handkerchief by the British artist Yinka Shonibare, MBE—appears to flap in Chicago’s wind.