Experts say One World Trade Center is tallest US building

This combination made from file photos shows Willis Tower, formerly known as the Sears Tower, in Chicago on March 12, 2008, left, and One World Trade Center in New York on Sept. 5, 2013. Soaring above the city at 1,776 feet, 104-story One World Trade Center is in contention with Willis Tower for the title of America's tallest building. A committee of architects recognized as the arbiters on world building heights is meeting Friday Nov. 8, 2013 in Chicago to decide whether a design change affecting One World Trade Center's needle disqualifies its hundreds of feet from being counted, which would deny the building the title of nation's tallest giving the title to the 110 story Willis Tower at 1,450 feet. (AP Photo)
November 12, 2013 8:13:19 AM PST
An expert committee of architects declares that New York's new World Trade Center tower is now the tallest building in the U.S., surpassing Chicago's Willis Tower.

The Height Committee of the Council on Tall Buildings and Urban Habitat announced its decision Tuesday in Chicago.

The committee is widely recognized as the final arbiter of official building heights around the world. It has been studying whether a design change means the needle atop 1 World Trade Center is part of the actual building or merely the equivalent of a broadcast antenna.

The tower built on the site of the 9/11 attacks stands at a symbolically important 1,776 feet tall including the 408-foot needle. It officially would have been considered 1,368 feet tall without the needle.

Willis Tower is 1,451 feet tall.

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