Since the public opening on April 4, 1973, New York's iconic Twin Towers remained a symbol of the city up until the tragic September 11 attacks. Take a look back at the iconic structures ...

The video starts post-impact, with the Twin Towers engulfed in smoke and flames while the sounds of shocked spectators are ...

David Childs, the lead architect of the One World Trade Center skyscraper that rose from the site where the Twin Towers collapsed in New York City during the 9/11 attacks, has died. He was 83.