Watch the Stunning, 7-Year Time-Lapse Vid of the 9/11 Memorial

This incredible time-lapse video shows a seven year period of the 9/11 Memorial's construction, from 2004-2011. The memorial will open to the public on the tenth anniversary of the 9/11 attacks.

Watch seven years of work compressed into 1:27 here:

And here are brief animations that include a preview of what the inside of the memorial's museum will look like:

(h/t Business Insider)