He also was involved in such notable projects as a new master plan for the National Mall in Washington, D.C. and an expansion of Dulles International Airport in Virginia.

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.

FILE - Architect David Childs talks about his design for the new 7 World Trade Center, a 52-story building which will rise to a height of 750 feet, during the design's unveiling at the building's ...