Business Chief USA February 2019
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87<br />
07<br />
Aon Center<br />
1,136ft<br />
A joint project by The Perkins and Will Partnership and Edward Durell<br />
Stone firms, Chicago’s Aon Center was completed in 1973 under the<br />
name ’Standard Oil Building.’ Upon completion, it was the world’s tallest<br />
marble-clad building, covered in 43,000 pieces of Italian marble.<br />
In 1992, the building was re-covered in white granite, at an estimated<br />
cost of over $80mn. The Aon Center has 83 floors, making it the<br />
third-tallest building in the city.<br />
aoncenterobservatory.com<br />
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