Enjoy it while you can.
Chicago's Willis Tower will soon lose its designation as the tallest building in the Western Hemisphere, but the building gets to hold the title for at least one more day.
The installation of a spire that would have pushed New York City's One World Trade Center higher than Willis Tower was postponed Monday because of bad weather.
The final portion of the 104-floor skyscraper will now be added at a "later date," which will cap the building at 1,776 feet -- the same height as the original twin towers that were destroyed on Sept. 11, 2001 and 325 feet higher than the Willis Tower.
The new building overlooks the Statue of Liberty and Ellis Island, and is scheduled to open for business in 2014.
The world's tallest building, topping 2,700 feet, is in Dubai.