Chicago is a major city in the Midwestern United States located on the shore of Lake Michigan. It rapidly grew from its founding in 1833 to become a major transportation and business hub, with over 3 million residents making it the third largest city in the country. Chicago is known for its architecture, culture, and as a global center for business and finance. Major attractions include Millennium Park, the Willis Tower, beaches along Lake Michigan, and art such as "The Bean" sculpture.