Time-Lapse of 9/11 Memorial Construction 2004-2011

August 24, 2011 | This one-minute time-lapse video documents the construction of the 9/11 Memorial over the course of 2004 to 2011. In it, you can see the twin square pools being constructed inside the footprints of the towers, and a sustainable "forest" spring up around them.  More

Courtesy of: The National September 11th Memorial and Museum

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