Chicago Museum of Science and Industry: Family Pass The Museum of Science and Industry, Chicago (MSI), the largest science museum in the Western Hemisphere, is home to more than 35,000 artifacts and more than 400,000 square feet of hands-on experiences designed to spark scientific inquiry and creativity. Since opening our doors in 1933, we%u2019ve welcomed more than 180 million guests from around the world. Our mission, to inspire the inventive genius in everyone by presenting captivating and compelling experiences that are real and educational, is realized through world-class exhibits such as: Science Storms, an exhibit revealing the science behind some of nature%u2019s most powerful phenomena; YOU! The Experience, an exhibit that lets you explore what it means to live a vital, healthy life in the 21st century; and the U-505 Submarine, the only German U-boat in the United States. Expires March 31, 2017