<Table> <Tr> <Th_colspan="2"> World Trade Center </Th> </Tr> <Tr> <Td_colspan="2"> The original World Trade Center in March 2001 . The tower on the left, with antenna spire, was 1 WTC . The tower on the right was 2 WTC . All seven buildings of the WTC complex are partially visible; refer to map below . The red granite - clad building left of the Twin Towers was the original 7 World Trade Center . In the background is the East River . </Td> </Tr> <Tr> <Td_colspan="2"> Show map of Manhattan Show map of New York Show map of the US Show all Location within Manhattan </Td> </Tr> <Tr> <Th_colspan="2"> Record height </Th> </Tr> <Tr> <Td_colspan="2"> Tallest in the world from 1971 to 1973 </Td> </Tr> <Tr> <Th> Preceded by </Th> <Td> Empire State Building </Td> </Tr> <Tr> <Th> Surpassed by </Th> <Td> Willis Tower </Td> </Tr> <Tr> <Th_colspan="2"> General information </Th> </Tr> <Tr> <Th> Status </Th> <Td> Destroyed </Td> </Tr> <Tr> <Th> Location </Th> <Td> Lower Manhattan, New York City </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 40 ° 42 ′ 42" N 74 ° 00 ′ 45" W ﻿ / ﻿ 40.71167 ° N 74.01250 ° W ﻿ / 40.71167; - 74.01250 Coordinates: 40 ° 42 ′ 42" N 74 ° 00 ′ 45" W ﻿ / ﻿ 40.71167 ° N 74.01250 ° W ﻿ / 40.71167; - 74.01250 </Td> </Tr> <Tr> <Th> Groundbreaking </Th> <Td> August 5, 1966 </Td> </Tr> <Tr> <Th> Construction started </Th> <Td> <Ul> <Li> 1 WTC: August 1968 </Li> <Li> 2 WTC: January 1969 </Li> <Li> 3 WTC: December 1979 </Li> <Li> 4, 5, and 6 WTC: 1970 </Li> <Li> 7 WTC: 1983 </Li> </Ul> </Td> </Tr> <Tr> <Th> Completed </Th> <Td> <Ul> <Li> 1 WTC: December 23, 1970 </Li> <Li> 2 WTC: July 19, 1971 </Li> <Li> 3 WTC: July 1981 </Li> <Li> 4, 5, and 6 WTC: 1975 </Li> <Li> 7 WTC: May 1987 </Li> </Ul> </Td> </Tr> <Tr> <Th> Opening </Th> <Td> April 4, 1973 </Td> </Tr> <Tr> <Th> Destroyed </Th> <Td> September 11, 2001 </Td> </Tr> <Tr> <Th> Owner </Th> <Td> <P> Port Authority of New York and New Jersey </P> </Td> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Th_colspan="2"> Other information </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Height </Th> </Tr> <Tr> <Th> Antenna spire </Th> <Td> 1 WTC: 1,728 feet (526.7 m) </Td> </Tr> <Tr> <Th> Roof </Th> <Td> <Ul> <Li> 1 WTC: 1,368 feet (417 m) </Li> <Li> 2 WTC: 1,362 feet (415.1 m) </Li> <Li> 3 WTC: 250 feet (76.2 m) </Li> <Li> 4 and 5 WTC: 120 feet (36.6 m) </Li> <Li> 6 WTC: 110 feet (33.5 m) </Li> <Li> 7 WTC: 610 feet (185.9 m) </Li> </Ul> </Td> </Tr> <Tr> <Th> Top floor </Th> <Td> <Ul> <Li> 1 WTC: 1,355 feet (413 m) </Li> <Li> 2 WTC: 1,348 ft (411 m) </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Technical details </Th> </Tr> <Tr> <Th> Floor count </Th> <Td> <Ul> <Li> 1 and 2 WTC: 110 floors </Li> <Li> 3 WTC: 22 floors </Li> <Li> 4 and 5 WTC: 9 floors </Li> <Li> 6 WTC: 8 floors </Li> <Li> 7 WTC: 47 floors </Li> </Ul> </Td> </Tr> <Tr> <Th> Floor area </Th> <Td> <Ul> <Li> 1 and 2 WTC: 4,300,000 sq ft (400,000 m) each </Li> <Li> 4, 5, and 6 WTC: 500,000 sq ft (50,000 m) each </Li> <Li> 7 WTC: 1,868,000 sq ft (170,000 m) </Li> </Ul> </Td> </Tr> <Tr> <Th> Lifts / elevators </Th> <Td> 1 and 2 WTC: 99 each </Td> </Tr> <Tr> <Th_colspan="2"> Design and construction </Th> </Tr> <Tr> <Th> Architect </Th> <Td> <Ul> <Li> Minoru Yamasaki </Li> <Li> Emery Roth & Sons </Li> </Ul> </Td> </Tr> <Tr> <Th> Developer </Th> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Th> Engineer </Th> <Td> Worthington, Skilling, Helle & Jackson, Leslie E. Robertson Associates </Td> </Tr> <Tr> <Th> Main contractor </Th> <Td> Tishman Realty & Construction Company </Td> </Tr> <Tr> <Th_colspan="2"> References </Th> </Tr> <Tr> <Td_colspan="2"> I. ^ World Trade Center at Emporis </Td> </Tr> </Table> <Tr> <Th_colspan="2"> World Trade Center </Th> </Tr>

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