Rare news footage of the second plane hitting the World Trade Center on 11 September, 2001, has been unearthed online.

In the 21 years since their destruction on 9/11, the Twin Towers of the World Trade Center have posthumously become such powerful symbols of Americanism that it is easy to forget how unpopular ...

A 3,000-pound steel I-beam pulled from the World Trade Center debris almost 23 years ago after the Sept. 11 terrorist attack and later gifted to Poudre Fire Authority has found its final resting ...

The twin towers of the World Trade Center, among the best known buildings in the world, represent only one step in the century-long evolution of skyscrapers in New York City. Here are some ...

NEW YORK (AP) — New York City on Wednesday marked the anniversary of the 1993 bombing at the World Trade Center, when Islamic extremists first attempted to bring down the twin towers with 1,200 ...

"Ground Zero Supertower" examines the new skyscraper, One World Trade Center, rising up 104 stories and 1,776 feet from the site where the Twin Towers once stood. NOVA also goes underground to see ...

Watch as the Bell of Hope rings at St Paul's Chapel in New York City to mark the exact moment when the first of two planes hit the World Trade Center Twin Towers on September 11, 2001. The bell ...