WTC is an abbreviation for the World Trade Center, a complex of buildings situated in Lower Manhattan, New York City. It is known worldwide for its tragic destruction in the terrorist attacks of September 11, 2001. Synonyms for WTC include the Twin Towers, which were two identical towers, the National September 11 Memorial and Museum, and 1 World Trade Center, the towering skyscraper that replaced the original Twin Towers. Other synonyms for WTC are Ground Zero, the site where the Twin Towers once stood, and the Freedom Tower, which was the original name for 1 World Trade Center.