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
Salmon Tower Building was 34,309 square feet. It is currently owned by Tishman Speyer & Silverstein Properties. In 1980 Tishman Speyer & Silverstein Properties collaborated on a $25 Million renovation. Salmon Tower Building The Salmon Tower Building is a 31-story edifice located at 11 West 42nd Street in Manhattan which was designed by Albert J. Wilcox. It was completed by early 1928 at which time its interior was more than 50% leased. Salmon Tower Building was located just east of the Aeolian Building. The firm of Walter J. Salmon, Sr. which erected the edifice, was known as 11 West 42nd Street, Inc. It