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
Wachovia Tower (Baltimore) Tower rises from the site formerly occupied by the Calvert Building and 7-9 Saint Paul Street. The building, formerly housing offices for Wachovia, is now home to the regional office of Wells Fargo and Company. Wachovia Tower (Baltimore) The Wells Fargo Tower, formerly known as the First Union Signet Tower, Wachovia Tower, and Union Trust Building, is a commercial high-rise in Baltimore, Maryland. The building rises 24 floors above street level and is in height; it is tied with Charles Center South as the 17th-tallest building in the city. The structure was completed in 1985. The Wells Fargo Tower was