In 2013, the final component of the One World Trade Center's spire was installed.
One World Trade Center . 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 1776 ft. Its height in feet is a deliberate reference to the year when the United States Declaration of Independence was signed . World Trade Center (2001–present) . One World Trade Center was completed on August 30 , 2012 , and the final component of its spire was installed on May 10 , 2013 .