World Trade Center 1& 2: 110-story Twin Towers, which presently are gone.
World Trade Center 3: Marriott World Trade Center Hotel was a 22-story
World Trade Center 4: was a 9-story low-rise office building in the southeast corner of the site, in Lower Manhattan, New York City.
World Trade Center 5: was a 9-story low-rise office building built 1970-1972 at New York City's World Trade Center.
World Trade Center 6: was the U.S. Customs House: a 537,693-square-foot (49,953-m), 7-story low-rise building in Lower Manhattan, New York City.
World Trade Center 7: The original structure had 47 floors and was 570 feet (174 m) tall. Which was distroyed from debris from WTC 1 & WTC 2 collapsing on 9/11/2001. WTC 7 construction was later completed 2006.
World Trade Center in New York City (sometimes informally referred to as the WTC or the Twin Towers) was a complex of seven buildings, mostly designed by American architect Minoru Yamasaki and developed by the Port Authority of New York and New Jersey.
