when did the new world trade center open
November 3, 2014
One World Trade Center
The building opened on November 3, 2014; the One World Observatory opened on May 29, 2015.

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One World Trade Center [SEP] Introduction
On May 10, 2013, the final component of the skyscraper's spire was installed, making the building, including its spire, reach a total height of . Its height in feet is a deliberate reference to the year when the United States Declaration of Independence was signed. The building opened on November 3, 2014; the One World Observatory opened on May 29, 2015. On March 26, 2009, the Port Authority of New York and New Jersey (PANYNJ) confirmed that the building would be officially known by its legal name of "One World Trade Center", rather than its colloquial name of "Freedom Tower".