About AT&T Corporate Center
The AT&T Corporate Center is the 5th tallest completed skyscraper in Chicago in Cook County, Illinois, United States and the 9th tallest in the United States at a height of 1,021 ft (307 m) containing 60 floors. Completed in 1989, the 1.7 million square foot (158,000 m²) supertall building stands two blocks east of the Chicago River and northeast of the Willis Tower at 227 West Monroe Street (100 South Franklin alternate address) in the Loop community area of downtown Chicago. Composed of retail and commercial office space, the tower is the tallest building constructed in Chicago in the last quarter of the 20th century. The building was built to consolidate American Telephone & Telegraph Company central regional headquarters offices. In 1982, the American Telephone & Telegraph Company monopoly was dissolved by the court ordered divestiture of local phone companies. In the decade that followed, AT&T erected new buildings across the country including the AT&T Building in New York City. On April 5, 1985, AT&T issued a request for proposals that produced eleven respondents. Stein and Co.