The largest science museum in the Western Hemisphere! Housed in the only remaining building from the 1893 World’s Fair, MSI is a Chicago must-see! You’ll experience 14 acres of hands-on exhibits and have the chance to stand before a 40-foot tornado; climb aboard a World War II German submarine; take a run in a human-sized hamster wheel; descend into an Illinois coal mine; tour a fully-functioning eco-friendly home; board a 727 hanging from the ceiling; transmit your pulse to a 13-foot, 3-D, beating heart; and much more! It’s fun and interactive! MSI has a legacy of being one of the first hands-on museums in the nation. It’s not a place where you walk around quietly and observe. No way! You get involved in the fun—and learn by doing. See your blood running through your veins, dive and surface a submarine or create an avalanche!