NEW YORK (CBSNewYork) - One World Trade Center is due to reach another milestone on Monday.
The final two sections of the 408-foot spire are scheduled to be raised by construction crews on Monday, which will make it the tallest building in the western hemisphere.
The stainless steel spire will give the building its iconic height of 1,776 feet, according to the builder.
Construction crews began assembling the spire atop the skyscraper late last year.
One World Trade Center is already the tallest building in New York City.
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