• Construction start: 1983
• Construction finish: 1987
• Designed by: Fujikawa Johnson & Associates
• Type: Skyscraper
• Stories: 40
• Maximum Height: 518 feet / 158 meters

• The 40-story towers are designed to hold up the roof of the Mercantile Exchange floor. The Mercantile needed 40,000 square feet of space with no support columns in the way. When the towers were built, they intentionally curved slightly outward in order to hold the exchange ceiling aloft. As people, office equipment, and furniture moved into the towers, the extra weight straightened them. In theory, if everyone moved out of the towers they would once again spread outward.
  
• November 28, 1983: The Chicago Mercantile Exchange trading floors open for business.
  *May 16, 2008: The last day of trading at this location. With the merger of the Chicago Mercantile Exchange and the Chicago Board of Trade, the traders moved to the CBOT building. The Board of Trade had larger floors better able to accommodate the number of traders from the merged organization.

There is one comment.

  this is a very nice building and i wish to design this kind of building after completing my degree.

maxwell ngoepe - Wednesday, April 5th, 2006 @ 7:42am