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World Trade Center Towers
World Trade Center, New York City - aerial view (March 2001).jpg
The Twin Towers of the World Trade Center in March 2001.

World Trade Center Towers were the world's tallest buildings from 1972 to 1973.[I]
Record height
Preceded byEmpire State Building
Surpassed byWillis Tower
General information
LocationNew York City
StatusDestroyed


Complete
Constructed1 WTC: 1966–1972
2 WTC: 1966–1973
3 WTC: 1980-1981
4, 5, & 6 WTC: 1975-1979
7 WTC: 1985-1987
DestroyedSeptember 11, 2001
Height
Antenna or spire1 WTC: 1,727 ft (526.3 m)
Roof1 WTC: 1,368 ft (417.0 m)
2 WTC: 1,362 ft (415.0 m)
Top floor1 WTC: 1,355 ft (413.0 m)
2 WTC: 1,348 ft (411.0 m)
Technical details
Floor count1 & 2 WTC: 110 floors
3 WTC: 22 floors
4 & 5 WTC: 9 floors
6 WTC: 8 floors
7 WTC: 47 floors
Floor area1 & 2 WTC: 4,300,000 sq ft (400,000 m2)
4, 5, & 6 WTC: 500,000 sq ft (50,000 m2)
7 WTC: 1,868,000 sq ft (170,000 m2)
ElevatorsBoth had 99 elevators
Companies involved
Architect(s)Minoru Yamasaki
Emery Roth & Sons
Structural engineerLeslie E. Robertson Associates
ContractorTishman Realty & Construction Company
OwnerPort Authority of New York and New Jersey

^ Fully habitable, self-supported, from main entrance to highest structural or architectural top; see the list of tallest buildings in the world for other listings.



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