Aon Center (Chicago) Aon Center (Chicago) The Aon Center (200 East Randolph Street, formerly Amoco Building) is a modern supertall skyscraper in the Chicago Loop, Chicago, Illinois, United States, designed by architect firms Edward Durell Stone and The Perkins and Will partnership, and completed in 1974 as the Standard Oil Building. With 83 floors and a height of 1,136 feet (346 m), it is the third tallest building in Chicago, surpassed in height by the Willis Tower, and the Trump International Hotel and Tower. The building is managed by Jones Lang LaSalle, which is also headquartered in the building. Aon Center formerly had
The Buckingham (Chicago) floor of the building for a total of 306 units. An indoor pool, sauna, laundry room, fitness center and open roof deck are located on the top floor. The Buckingham has 3 high-speed elevators that run the length of the building plus one elevator that runs from the first floor to each floor of the 4-story underground parking garage. The Buckingham is east of 340 on the Park. It appears (unlabelled) in front of Park Tower (Chicago) in the diagram below. The Buckingham (Chicago) The Buckingham, formerly known as Buckingham Plaza, is a 44-story all-residential condominium designed by Fujikawa Johnson