Chicago's Chase Tower was completed in 1969, and originally known as the First National Bank Building, and later as Bank One Building.  Made of concrete, granite and steel, it stands 850 feet high.  Its symmetrical curves towards the base are reminiscent of the Grace Building in New York, although in Chicago's Famous Buildings, authors Schulze and Harrington call it "a palpably tauter, more muscular work." 

    The Aon Center just edges out the Hancock Tower for height to take second place in Chicago to the Sears Tower.  Some consider it International style, but it is included here as within Modernism.  Completed in the early 1970s, it is 1,136 feet high and 83 stories above ground.  Originally known as the Standard Oil Building and then the Amco Building.  It is made of granite and steel, with a pile foundation.