The World Trade Center (WTC) is a complex of buildings in the Lower Manhattan neighborhood of New York City, replacing the original seven buildings on the same site that were destroyed in the September 11 attacks of 2001. The site is being rebuilt with up to six new skyscrapers, four of which have been completed; a memorial and museum to those killed in the attacks; the elevated Liberty Park adjacent to the site, containing the St. Nicholas Greek Orthodox Church and the Vehicular Security Center; the Perelman Performing Arts Center; and a transportation hub. The 104-story One World Trade Center, the tallest building in the Western Hemisphere, is the lead building for the new complex.

The National September 11 Memorial & Museum is a memorial and museum that are part of the World Trade Center complex, in New York City, created for remembering the September 11 attacks of 2001, which killed 2,977 people, and the 1993 World Trade Center bombing, which killed six. The memorial is located at the World Trade Center site, the former location of the Twin Towers that were destroyed during the September 11 attacks. It is operated by a non-profit institution whose mission is to raise funds to program and operate the memorial and museum at the World Trade Center site.