When Were the Twin Towers Built?

One World Trade Center is the main building of the rebuilt World Trade Center complex in Lower Manhattan, New York City. One WTC is the tallest building in the United States, the tallest building in the Western Hemisphere, and the sixth-tallest in the world.

When were the Twin Towers built the first time?

It opened on April 4, 1973, and was destroyed in 2001 during the September 11 attacks. At the time of their completion, the Twin Towers—the original 1 World Trade Center (the North Tower) at 1,368 feet (417 m); and 2 World Trade Center (the South Tower) at 1,362 feet (415.1 m)—were the tallest buildings in the world.

How long did it take to build the twin tower?

Time to build: 14 years (from formal proposal to finish)

They broke ground in 1966. Two or three stories went up weekly. The towers used 200,000 tons of steel and, according to the 9/11 Memorial & Museum, enough concrete to run a sidewalk between New York City and Washington, D.C.