408-foot silver spire permanently installed atop One World Trade Center tower

NEW YORK - A 408-foot silver spire has been permanently installed on the roof of the One World Trade Center tower in New York City.

That brings the iconic structure to its full, symbolic height of 1,776 feet.

The Port Authority of New York and New Jersey says the spire's installation was completed Friday morning.

Pieces of the spire were transported to the roof of the building last week. It weighs 758 tons.

The spire will serve as a broadcast antenna. An LED-powered light emanating from it will be seen from miles away.

The new tower is at the northwest corner of the World Trade Center site, where the 72-story Four World Trade Center and other buildings are being built.

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