Mesmerizing GIF Shows Entire Construction Of One World Trade Center

Thirteen years after the Sept. 11 terrorist attacks, One World Trade Center is officially open for business.

It took more than a decade to build One World Trade Center, but this GIF, tweeted by DailyMotion partnership manager Dan Milano last year, captures the construction of one of the tallest buildings in New York City in just 24 seconds.

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Although thousands of workers will eventually occupy what was formerly known as the Freedom Tower, 175 Conde Nast employees moved into the building Monday.

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