Aon Center (Chicago)
The Aon Center (200 East Randolph Street, formerly Amoco Building)[3] is a modern super tall skyscraper east of the Chicago Loop, Chicago, Illinois, United States, designed by architect firms Edward Durell Stone and The Perkins and Will partnership, and completed in 1973[4] as the Standard Oil Building (nicknamed "Big Stan").[5] With 83 floors and a height of 1,136 feet (346 m), it is the fourth-tallest building in Chicago,[2] surpassed in height by Willis Tower, Trump International Hotel and Tower, and St Regis Chicago.
Not to be confused with Aon Center (Los Angeles).Aon Center
Completed
Office
200 E. Randolph St.
Chicago, Illinois 60601
United States
1970
1973
US$120 million
Mark Karasick
Victor Gerstein[1]
346.3 m (1,136 ft)[2]
362.5 m (1,189 ft)[2]
328 m (1,076 ft)[2]
83 above ground[2]
5 below ground
334,448 m2 (3,599,968 sq ft)[2]
50, made by the Otis Elevator Company
The building is managed by Jones Lang LaSalle, which is also headquartered in the building. Aon Center also houses the headquarters of Aon and one of Kraft Heinz's two headquarters (the other being in Pittsburgh), and the former world headquarters of Amoco prior to its merger into BP.[6][7][8][9]
The building was briefly the tallest in Chicago, but was soon surpassed by the Sears Tower. It was the fourth-tallest building in the world at the time of its completion.
From the east
From the southwest
Looking up the building from the ground
