The Chicago History Museum is dedicated to collecting information about, and preserving the heritage of, the city's past. It also focuses on select areas of American history and features permanent and rotating exhibits of art, historical objects, and artifacts. Visit and discover answers to questions like, "Why is Chicago dubbed 'the Windy City?'" and "How was Chicago involved in the Civil War?" The Society holds about 20 million historical documents and artifacts. Free admission on Mondays.