224 S. Michigan Ave. Chicago, Ill. 60604 (312) 922-3432 www.architecture.orgHours: Season runs April 5 through Nov. 23, 2014; check website for times. Admission: $37.85
River cruises depart from Michigan Avenue and Wacker Drive, just north of Millennium Park. Docents provide the 90-minute tour with entertaining and fact-filled commentary on Chicago's architecture. Season begins in April. Also offers walking, Segway, bike, bus/trolley, and "L" tours.