One World Trade Center now NY's tallest bldg

An ironworker lights a torch after two columns, left and center, were installed at the top of One World Trade Center to make it New York City's tallest skyscraper, Monday, April 30, 2012 in New York. One World Trade Center is being built to replace the twin towers destroyed in the Sept. 11 attacks. It reached just over 1,250 feet on Monday. That's just taller than the observation deck on the Empire State Building. (AP Photo/Mark Lennihan, Pool) <span class=meta>(AP Photo/ Mark Lennihan)</span>
April 30, 2012 4:48:19 PM PDT