New York's World Trade Center reopened
New York's World Trade Center has reopened for business more than 13 years after the original towers were destroyed in the 9/11 attacks.
The $3.8 billion skyscraper took eight years to build and is now the tallest building in the US.
Executive director of the Port Authority, Patrick Foye, which owns the restored site, says the New York City skyline is whole again.
The skyscraper is at the centre of the site, which includes a memorial in the footprints of the old towers and a museum, opened this year.
An observation deck at the top of the building will eventually be open to the public.
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