New York's ground zero through time

Published On: Aug 23 2011 04:09:26 AM CDT   Updated On: Nov 30 2014 01:26:35 PM CST

One World Trade Center is officially open for business. Take a look at the World Trade Center site through time, from the construction of the Twin Towers to the opening of the new centerpiece on the site.

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Mario Tama/Getty Images

A worker cleans the south pool waterfall as construction continues on the National September 11 Memorial & Museum at the World Trade Center site on Aug. 24, 2011, in New York City.

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