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NEW YORK CITY — The World Trade Center tower, constructed to replace the twin towers that were leveled on 9/11, has edged out the Empire State Building as the tallest building in New York City. On Monday, crews installed steel columns on top of the tower, which surpassed the 1,250-foot high Empire State Building. When finished, One World Trade Center will stand 1,776 feet tall. Completion is scheduled for the end of 2013. The property is being jointly developed by the Port Authority of New York and New Jersey and The Durst Organization. The building is expected to be the tallest in the western hemisphere. Burj Khalifa in Dubai remains the world's tallest building at 2,723 feet.