World Trade Center now tallest building in Western Hemisphere
02:30
As a crane lifted the final pieces of a spire to the top of One World Trade Center, the tower became 1,776 feet high -- the tallest building in the Western Hemisphere. The height harkens to the year the Declaration of Independence was signed, which was in 1776. NBC’s Anne Thompson reports.May 10, 2013
UP NEXT
Deadly tornadoes in Mississippi leave behind path of destruction
01:21
Watch: Giant Pacific octopus rescue caught on camera
01:49
At least 2 killed, several missing in Pennsylvania factory explosion
00:49
At least two dead, 10 hospitalized after medical emergency on Texas train
01:16
U.S. and Canada strike new deal to turn back asylum seekers
03:26
Multiple U.S. airports face disturbances delaying flights