The Twin Towers of the original World Trade Center in New York City officially opened on April 4, 1973. They stood as iconic landmarks until they were destroyed in the terrorist attacks on September 11, 2001. The North Tower and South Tower were completed after several years of construction starting in the late 1960s, with construction topping out in 1970 and 1971 respectively. Their opening symbolized economic prosperity and became a defining feature of the Manhattan skyline for nearly three decades.
