McCormick Bridge house Museum – 376 N Michigan Ave, Chicago, IL 60601, lower Wacker Dr. (312) 977-0227, bridgehousemuseum.org
Q-tips say: See it. McCormick Bridgehouse & Chicago River Museum celebrates the Chicago River and its world-famous movable bridges. Tons of photos telling the story of how the bridges move and also how they change the course of the flow of the water.
NOTE: It is FREE on Sundays. Mrs. Q says: FREE is Good!