One World Trade Center
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One World Trade Center is New York's tallest building

1 May 2012 Last updated at 06:40 BST

One World Trade Center - the building replacing the twin towers destroyed on September 11th - has claimed the title of New York's tallest skyscraper, overtaking the Empire State Building.

Steel columns raised the structure to a little over 381 metres, as Laura Trevelyan reports.