Built primarily between 1966 and 1975, it was dedicated on April 4, 1973, and was destroyed on September 11, 2001. Two planes hit the Twin Towers of the World Trade Center in New York, with the second strike 17 minutes after the first. The buildings were set on fire, trapping people on the upper floors, and... World Trade Center, complex of several buildings around a central plaza in New York City that in 2001 was the site of the deadliest terrorist attack in American history. (See September 11 attacks.) WORLD'S TALLEST TWIN BUILDING The twin towers were originally proposed to be built at a height of only 1400 feet (427m). Thankfully, the vision for greater potential in the building as the world's tallest structures led to architects and engineers pressing for additional height in every possible way. To meet these ambitions, many structural aspects were recalculated and retested in wind tunnels. This resulted in the addition of a dome with an integrated pinnacle atop the towers, successfully ...
