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World Trade Center Towers
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 by	Empire State Building
Surpassed by	Willis Tower
General information
Location	New York City
Status	Destroyed Complete
Constructed	1 WTC: 1966–1972 2 WTC: 1966–1973 3 WTC: 1980-1981 4, 5, & 6 WTC: 1975-1979 7 WTC: 1985-1987
Destroyed	September 11, 2001
Height
Antenna or spire	1 WTC: 1,727 ft (526.3 m)
Roof	1 WTC: 1,368 ft (417.0 m) 2 WTC: 1,362 ft (415.0 m)
Top floor	1 WTC: 1,355 ft (413.0 m) 2 WTC: 1,348 ft (411.0 m)
Technical details
Floor count	1 & 2 WTC: 110 floors 3 WTC: 22 floors 4 & 5 WTC: 9 floors 6 WTC: 8 floors 7 WTC: 47 floors
Floor area	1 & 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)
Elevators	Both had 99 elevators
Companies involved
Architect(s)	Minoru Yamasaki Emery Roth & Sons
Structural engineer	Leslie E. Robertson Associates
Contractor	Tishman Realty & Construction Company
Owner	Port 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.