(CNN) - Construction on the new One World Trade Center in New York is moving along.
The skyscraper is being built about a pace of about one floor per week.
This time-lapse photography gives us a quick look at the effort from the beginning.
The Port Authority plans to open the building in late 2013.
Posted at 7:41 AM, Apr 27, 2012
and last updated 2012-04-27 07:42:02-04
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