Aon Center (Chicago)

The Aon Center is a 346 -meter-high skyscraper in the U.S. city Chicago, Illinois. The building is located on 200 East Randolph Street in Chicago Loop district.

Description

The Aon Center was built in 1970-1973. It is up to the roof edge, 346 meters high and has 83 floors, making it briefly the tallest building in Chicago was after its completion. It surpassed the 1969 built and 344 meters high John Hancock Center by two meters and (formerly Sears Tower ) was in 1974 by nearly one hundred meters through the 442 -meter-high Willis Tower. From 1974 to 1990, however, the Aon Center was over a period of 16 years, the fifth tallest building in the world until 2009 it was the second tallest skyscraper in Chicago. Today it is still the third tallest building in Chicago and the sixth- tallest in the United States, according to the One World Trade Center (New York City ), the Willis Tower, the Empire State Building ( New York City ), Trump Tower (Chicago ) and the Bank of America Tower (New York City). In skyscraper is the headquarters of the insurance company Aon Corporation, after which it was named. The entire building is, apart from some technical equipment to operate, used exclusively for offices. The 83 floors of the building have a total floor area of ​​approximately 334,000 square meters. The Aon Center beherhergt unlike other skyscrapers of the city, including the Willis Tower or the John Hancock Center no public facilities for the public.

The building was built with the same construction method as the former World Trade Center ( completed in 1972 and 1973) in New York City and this is similar in design, however, is about 70 meters niederiger.

Others

The Aon Center was originally clad in Carrara marble, which had to be replaced due to unfavorable climatic conditions from 1990 to 1992 by white granite slabs. The cost of this renovation were higher in this case than those for the construction of the building.

In March 2010, was published that the Aon Center is one of the most energy efficient and environmentally friendly buildings in the United States.

Previous names

Due to change of ownership was the Aon Center already several names:

• Amoco Building
• Standard Oil Building