The Chicago Architecture Center (CAC), formerly the Chicago Architecture Foundation, is a nonprofit cultural organization with tours, exhibitions, programs and events for all ages. The CAC's mission is to inspire people to discover why design matters. Visit the CAC at 111 E. Wacker Dr. to view our 4,200-building scale model of Chicago, shop in our award-winning store, or participate in a fun LEGO® building event in our ArcelorMittal Design Studio. Choose from 85 tours by boat, walking, bus, or even L train, including the CAFC River Cruise aboard Chicago's First Lady Cruises. Tours depart daily and are led by the CAC's volunteer docent guides. Every fall, check out the CAC's free annual Open House Chicago festival. Cover photo by Eric Allix Rogers.