The World Trade Center (WTC) was a complex of seven buildings in Lower Manhattan in New York City that were destroyed in the September 11, 2001, terrorist attacks. The site is currently being rebuilt with six new skyscrapers and a memorial to the casualties of the attacks.

On September 20, 1962, the Port Authority announced the selection of Minoru Yamasaki as lead architect and Emery Roth & Sons as associate architects. Yamasaki devised the plan to incorporate twin towers; Yamasaki's original plan called for the towers to be 80 stories tall. To meet the Port Authority's requirement for 10 million square feet (930,000 m2) of office space, the buildings would each have to be 110 stories tall.