New York's One World Trade Center (L) and Chicago's Willis Tower are seen in a combination of two photos taken September 29, 2013 (L) and July 16, 2009. The Council on Tall Buildings and Urban Habitat... more 
New York's One World Trade Center (L) and Chicago's Willis Tower are seen in a combination of two photos taken September 29, 2013 (L) and July 16, 2009. The Council on Tall Buildings and Urban Habitat has announced that One World Trade Center will surpass the Willis Tower as the tallest building in the United States when it opens next year. REUTERS/Gary Hershorn/Frank Polich/Files (UNITED STATES - Tags: CITYSPACE SOCIETY) less 
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Reuters | Photo By STAFF / REUTERS
Tue, Nov 12, 2013 12:25 PM EST