By the time One World Trade Center (aka the Freedom Tower) is completed in 2013 or 2014, it will have been more than a decade since the 9/11 terror attacks. But this amazing time-lapse video shows all the progress made on the mighty building in slightly more than a minute-and-a-half.

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Once the 104 story building is complete, it will be taller than the Empire State Building, which currently stands at 1,250 feet. Additionally, the skyscraper, which occupies the area where 6 World Trade Center once stood, will be the third tallest building in the world.

Construction began on the structure six years ago and 100 floors have been completed to date. The video comes courtesy of EarthCam, a company that has live webcams scattered all throughout the construction site.