The Leo Burnett Building, located on 35 West Wacker Drive at North Dearborn Street in the Chicago Loop, is a 50 story, 635 foot (193 m) tall skyscraper above the Chicago River's Main Stem on the southern bank. When built in 1989, it was the 12th tallest structure in Chicago. It was designed by Kevin Roche-John Dinkeloo and Associates and Shaw & Associates. It is a postmodern design made with granite, masonry, glass, steel and concrete.