how many square feet were the twin towers
World Trade Center (1973–2001) The original World Trade Center was a large complex of seven buildings in Lower Manhattan, New York City, United States. It featured the landmark twin towers, which opened on April 4, 1973, and were destroyed in 2001 during the September 11 attacks. At the time of their completion, the "Twin Towers"—the original 1 World Trade Center, at 1,368 feet (417 m); and 2 World Trade Center, at 1,362 feet (415.1 m)—were the tallest buildings in the world. Other buildings in the complex included the Marriott World Trade Center (3 WTC), 4 WTC, 5 WTC, 6 WTC, and 7 WTC. All were built between 1975 and 1985, with a cost of $400 million ($2,300,000,000 in 2014 dollars).[4] The complex was located in New York City's Financial District and contained 13,400,000 square feet (1,240,000 m2) of office space.[5][6]
World Trade Center (1973–2001) The cleanup and recovery process at the World Trade Center site took eight months, during which the remains of the other buildings were demolished. The World Trade Center complex was rebuilt over more than a decade. The site is being rebuilt with six new skyscrapers, while a memorial to those killed in the attacks and a new rapid transit hub have both opened. One World Trade Center, the tallest building in the United States, is the lead building for the new complex, reaching more than 100 stories upon completion in November 2014.
Grenfell Tower fire Construction, by contractors A E Symes of Leyton, under the council housing system, ran from 1972 to 1974.[28][29] The 67.30-metre (220 ft 10 in) tall building contained 120 one- and two-bedroom flats.[30][31] The upper 20 of 24 storeys had six dwellings and 10 bedrooms each. The lower four storeys were used for non-residential purposes. Later, two floors were converted to residential use, bringing the total to 129 apartments, housing up to 600 people.
Burj Al Arab The building opened in December 1999.[18]