One World Trade Center spire installed, 1,776 feet tall

The silver spire has been permanently installed atop One World Trade Center, bringing the iconic New York City structure to its full, symbolic height of 1,776 feet. With the installation, One World Trade Center is now the tallest building in the United States.{} The pieces of the spire were transported to building's roof last week. The 408-foot spire will now serve as a world-class broadcast antenna. And an LED-powered light emanating from it will be seen from miles away.

In case you were wondering, the tallest man made structure in the world is the Burj Khalifa.{} The skyscraper in Dubai tops out at 2,722 feet tall.