The 9/11 Memorial Plaza is just days from being unveiled, but there is still plenty of work to be done in the skies above.
Take a virtual tour inside the fast-rising One World Trade Center building from the ground right up to the 74th Floor of this centerpiece of Lower Manhattan's rebuilding effort.
The tower will eventually rise to 104 stories and, once the spire is affixed, will stand a symbolic 1,776 feet above New York City.
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