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Aon Center

skyscraper in the Chicago Loop, Chicago, Illinois, United States

Key facts

Former names: Amoco Building Standard Oil Building
Status: Completed
Type: Office building
Architectural style: Modern
Location: 200 E. Randolph St. , Chicago, IL 60601, United States
Cost: US$ 120 million
Owner: Mark Karasick , Victor Gerstein
Architectural: 346.3 m (1,136 ft)
Tip: 362.5 m (1,189 ft)
Top floor: 328 m (1,076 ft)
Floor count: 83 above ground , 5 below ground
Floor area: 334,448 m (3,599,968 sq ft)
Lifts elevators: 50, made by the Otis Elevator Company
Architect: Edward Durell Stone
Developer: Standard Oil of Indiana
Main contractor: Turner Construction

via Wikipedia infobox

Article

The Aon Center (200 East Randolph Street, formerly Amoco Building) is a modern supertall skyscraper located in the Northeast corner of the Chicago Loop, Chicago, Illinois, United States. It was designed by architect firms Edward Durell Stone and The Perkins and Will partnership and was completed in 1973 as the Standard Oil Building (nicknamed "Big Stan"). With 83 floors and a height of 1,136 feet (346 m), it is the fourth-tallest building in Chicago, surpassed in height by the Willis Tower, Trump International Hotel and Tower, and St. Regis Chicago.

The building is managed by JLL, which is also headquartered in the building. Aon Center houses the headquarters of Aon, Blue Cross Blue Shield Association, and Kraft Heinz (BCBS and Kraft Heinz each have a second headquarters, located in Washington D.C. and Pittsburgh respectively); the building formerly served as the world headquarters of Amoco prior to its merger into BP.