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Aon Center (Chicago)

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Aon Center
Map
General information
TypeOffice
Location200 E. Randolph St.
Chicago, Illinois 60601,
United States
Construction started1970
Completed1974
Opening1973
Cost$120,000,000 (USD)
OwnerJones Lang LaSalle
Height
Architectural1,136 ft (346 m)[1]
Technical details
Floor count83 aboveground[1]
5 belowground
Floor area3,600,000 sq ft (334,451 m2)[1]
Lifts/elevators50, made by Otis Elevator Company
Design and construction
Architect(s)Edward Durell Stone[1]
DeveloperStandard Oil of Indiana
Main contractorTurner Construction[1]
References
[1]

The Aon Center (200 East Randolph Street, formerly Amoco Building)[2] is a modern 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[3] as the Standard Oil Building.[4] With 83 floors and a height of 1,136 feet (346 m), it is the third tallest building in Chicago,[1] 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 headquarters of Aon and Amoco; Aon's US operations are still headquartered here.[5][6] The Aon Center is almost identical in design and floorplan to First Canadian Place in Toronto, Canada, the only major design difference being the orientation of the exterior windows, which can be seen by comparing exterior images of the two buildings.

History

Alternate views
from southwest
from south

The Standard Oil Building was constructed as the new headquarters of the Standard Oil Company of Indiana, which had previously been housed at South Michigan Avenue and East 9th Street. When it was completed in 1974 it was the tallest building in Chicago and the fourth-tallest in the world, earning it the nickname "Big Stan".[7] (A year later, the Sears Tower took the title as Chicago's and world's tallest.) The building employs a tubular steel-framed structural system with V-shaped perimeter columns to resist earthquakes, reduce sway, minimize column bending, and maximize column-free space. This construction method was also used for the World Trade Center towers in New York City.

When completed, it was the world's tallest marble-clad building, being sheathed entirely with 43,000 slabs of Italian Carrara marble. The marble used was thinner than previously attempted in cladding a building; this quickly proved to be a mistake. On December 25, 1973, during construction a 350 pound marble slab detached from the façade and penetrated the roof of the nearby Prudential Center.[8] In 1985, inspection found numerous cracks and bowing in the marble cladding of the building. To alleviate the problem, stainless steel straps were added to hold the marble in place.[7] Later, from 1990 to 1992, the entire building was refaced with Mount Airy white granite at an estimated cost of over $80 million.[4][9] (Amoco was reluctant to divulge the actual amount, but it was well over half the original price of the building, without adjustment for inflation.) Two-thirds of the discarded marble was crushed and used as landscaping decoration at Amoco's refinery in Whiting, Indiana, one-sixth was donated to Governor's State University, in University Park, Illinois, and one-sixth donated to Regalo, a division of Lashcon Inc. Under a grant from the Illinois Department of Rehabilitative Services, Regalo's 25 handicapped workers carved the discarded marble into a variety of specialty items such as corporate gifts and mementos including desk clocks and pen holders.[4][10] The building's facade now somewhat resembles that of the former World Trade Center due to the upward flow of the columns.

The Standard Oil Building was renamed the Amoco Building when the company changed names in 1985. In 1998, Amoco sold the building to The Blackstone Group for an undisclosed amount, estimated to be between $430 and $440 million.[4][7] It was renamed as the Aon Center on December 30, 1999, although the Aon Corporation would not become the building's primary tenant until September 2001.[11] In May 2003, Wells Real Estate Investment Trust, Inc. acquired the building for between $465 and $475 million.[4][12] (On August 10, 2007, Wells Real Estate Investment Trust, Inc. changed its name to Piedmont Office Realty Trust, Inc.)[13]

Looking up

Exterior lighting

In recent years, the top floors of the building have been lit at night with colors to reflect a particular season or holiday. Orange is used for Thanksgiving, green or red for Christmas, and pink during National Breast Cancer Awareness Month. The lighting commonly matches the nighttime lighting on the antenna of Willis Tower, the John Hancock Center and the upper floors of the Merchandise Mart.

Plaza

In the plaza, there is a sounding sculpture by Harry Bertoia.

Tenants

It was the headquarters of the Miller-Chicago Electric Company from 1974 to 1999, at which time the company was broken up.

Position in Chicago's skyline

The skyline of a city with many large skyscrapers; in the foreground is a green park and a lake with many sailboats moored on it. Over 30 of the skyscrapers and some park features are labeled.311 South WackerWillis TowerChicago Board of Trade Building111 South WackerAT&T Corporate CenterKluczynski Federal Building333 South WabashChase TowerThree First National PlazaMid-Continental PlazaRichard J. Daley CenterChicago Title and Trust Center77 West WackerPittsfield BuildingLeo Burnett BuildingThe Heritage at Millennium ParkCrain Communications BuildingIBM PlazaOne Prudential PlazaTwo Prudential PlazaAon CenterBlue Cross and Blue Shield Tower340 on the ParkPark TowerOlympia Centre900 North Michigan875 North Michigan AvenueWater Tower PlaceHarbor PointThe ParkshoreNorth Pier ApartmentsLake Point TowerJay Pritzker PavilionBuckingham FountainLake MichiganLake MichiganLake Michigan

See also

References

  1. ^ a b c d e f g "Aon Center - The Skyscraper Center". Council on Tall Buildings and Urban Habitat.
  2. ^ Roeder, David (2003-02-21). "New owner expected for Aon Center". Chicago Sun-Times. Newsbank. Retrieved 2008-09-18.
  3. ^ "The Sky's the Limit: A Century of Chicago Skyscrapers" New York: Rizzoli, 1990, Saliga, Pauline, ed.
  4. ^ a b c d e Emporis. "Aon Center, Chicago". Retrieved 2008-04-23.
  5. ^ Aon Shifts Headquarters to London
  6. ^ "Contacts." Amoco. February 12, 1998. Retrieved on March 31, 2010.
  7. ^ a b c Glass Steel and Stone. "Aon Center". Archived from the original on 26 August 2007. Retrieved 2007-09-25. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  8. ^ Chicago Tribune, December 26, 1973
  9. ^ McMillan, Greg (2007-06-12). "Two buildings, two cities, one problem". The Globe and Mail. Toronto. Retrieved 2007-09-25. {{cite news}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help) [dead link]
  10. ^ Stephen D. Cosper (January 1993). "Construction and Demolition Waste: Generation, Regulation, Practices, Processing, and Policies" (PDF). University of Illinois at Chicago, Office of Solid Waste Management. p. 31. Retrieved 26 March 2010. {{cite web}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
  11. ^ Business Wire. "ADVISORY/Chicago Landmark Office Tower Officially Renamed Aon Center During Unveiling Ceremony". Retrieved 2007-09-25. {{cite web}}: |author= has generic name (help)
  12. ^ Miller Cicero, LLC (2003-10-07). "Trophy Building Sale Sets New Record". Archived from the original on 2007-05-18. Retrieved 2007-09-25.
  13. ^ Piedmont Office Realty Trust, Inc. "Wells REIT Changes Name to Piedmont Office Realty Trust". Retrieved 2007-08-10.
  14. ^ "Contact Us." AON Corporation. Retrieved on January 31, 2009.
  15. ^ "Chicago." SkyTeam. Retrieved on January 31, 2009.
  16. ^ "Agency.com Chicago Maps and Directions". Agency.com. Retrieved 2009-08-25.
  17. ^ "Jones Lang LaSalle Recommits to Aon Center for Its Headquarters". HighBeam. Retrieved 2009-08-25.
  18. ^ "Marketing Support Renews at AON Center". Costar Group. Retrieved 2009-08-25.
  19. ^ "ThoughtWorks Expands, Relocates to Aon Center". Costar Group. Retrieved 2009-08-25.
  20. ^ "Dontech Renews". Globest. Retrieved 2009-08-25.
  21. ^ "Strata Decision Technology Chicago Office Relocates." Retrieved on February 24, 2009.
  22. ^ "The Mid-America Club". Eventective. Retrieved 2009-08-25.
  23. ^ "Veolia Environnement". World Business Chicago. Retrieved 2009-08-25.
  24. ^ "Microsoft Plans to Occupy 75,000 SF at Aon Center". Costar Group. Retrieved 2009-08-25.
  25. ^ Chicago Tribune
  26. ^ "KPMG Moving Local Office to Aon Center". Retrieved 2012-08-17.

External links

Wikimedia Commons has media related to Aon Center.
Preceded by Tallest building in Chicago
1972–1973
346 m 		Succeeded by
Tallest building in the United States outside of New York City
1972–1973
346 m
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