Sears Tower 3 Magnet

The Sears Tower is a supertall skyscraper in Chicago, Illinois, and the tallest building in the United States since 1973. In 1969 Sears, Roebuck & Co. was by far the largest retailer in the world, with about 350,000 employees. Sears executives decided to consolidate the thousands of employees in offices distributed throughout the Chicago area into one building on the western edge of Chicago's Loop. With immediate space demands of 3 million square feet (279,000 m²), and with predictions and plans for future growth necessitating even more space than that, architects for Skidmore knew that the building would be one of the largest office buildings in the world.