One World Trade Center is getting closer to becoming the tallest building in the Western Hemisphere.
The final two sections of the 408-foot spire that will sit on top of the building are being raised up to the roof. They will be installed at a later date.
The raising of the pieces was originally scheduled for Monday, but was postponed because of bad weather.
Installation of the 800-ton spire began in December after 18 pieces were shipped from Canada and New Jersey.
The spire will serve as a world-class broadcast antenna and provide public transmission services for television and radio broadcast channels that were destroyed on Sept. 11, 2001, along with the trade center towers.
Final Pieces Of Spire Lifted To Top Of One World Trade Center
Once the spire is fully installed, the building will stand at 1,776 feet.
The building is already the tallest in New York City and once completed, will become the tallest building in the Western hemisphere and the third tallest in the world.
One World Trade Center is slated to open in 2014.
Read more at CBS NEW YORK.