Hundreds of thousands of high definition images that have been hand edited into a time-lapse video capturing the construction of One World Trade Centre across the past 11 years.
The video was shot by Time-lapse experts EarthCam.
The company's CEO and founder said it was their way of paying tribute.
"Dedicating the past 13 years to providing technology to create this time-lapse is our way of honoring the victims of 9/11."Â
One World Trade Centre was finished on May 25, America's Memorial Day.Â
All photos and the original camera have been donated to the National September 11 Memorial Museum.
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