Chicago brands: Sears, Wrigley, United Airlines, McDonald's and Orbitz

The metropolitan Chicago area is home to over 30 Fortune 500 companies

Chicago was the birthplace of: the refrigerated rail car (Swift), mail-order retailing (Sears and Mongtomery Ward), the car radio (Motorola), the TV remote control (Zenith), and the drive-through bank
Courtesy City of Chicago / GRC

The world's largest commercial office building, the Merchandise Mart

The world's largest convention facility, McCormick Place