Prima Torre del World Trade Center ad essere completata

NEW YORK, NY – JUNE 25: Construction workers are viewed at Three World Tade Center on June 25, 2012 in New York City. A ceremony was held at Four World Trade Center as the last steel beam was hoisted 977 feet to the top of the building. The trapezoidal glass and steel office building, which is designed as an architectural backdrop to the September 11 Memorial, is scheduled to open in 2013. (Photo by Spencer Platt/Getty Images)