The IBM Building in Chicago (1969-71) was Ludwig Mies van der Rohe's last American building.  It is 52 stories, and 695 feet high.  In considering his buildings, one is reminded of Piet Mondrian's work--of a kind, but each unique in their simplicity of composition.

    The Union Carbide Building (its original name; it became the Manufacturers Hanover Trust Company Building, then the Chemical Bank Building, and is now known as the Chase Building)  was completed in 1960.  It is 52 stories and located at 270 Park Avenue, New York City.  Gordon Bunshaft was the principal architect, assisted by Natalie de Blois and Jack G. Dunbar.