"[The original twin towers] ... were built at a time when New York's future seemed uncertain, the towers restored confidence and helped bring a halt to the decline of lower Manhattan. Brash, glitzy, and grand, they quickly became symbols of New York."
—David Johnson and Shmuel Ross, World Trade Center History
It was April 4th, 1973, when the ceremonial ribbon was cut at the World Trade Center (WTC). That date concluded seven long years of construction-preceded by more than a decade's worth of planning-that transformed 16 acres of Lower Manhattan into a singular international business hub.