City Hall Chicago boasts 10,000-square-feet of flexible event space, with a separate grand entrance on Kinzie Street. The column-free hall, with its soaring 40-foot-high ceilings, 37-foot stone bar and industrial-elegant architectural detailing, is a striking venue for large-scale events, meetings and receptions. City Hall Chicago offers a fully equipped bridal suite and green room, which overlook the space from the second floor.