Windows on the World was a complex of venues on the top floors ( 106th and 107th ) of the North Tower ( Building One ) of the original World Trade Center complex in Lower Manhattan . It included a restaurant called Windows on the World , a smaller restaurant called Wild Blue , a bar called The Greatest Bar on Earth , and rooms for private functions . Developed by restaurateur Joe Baum and designed initially by Warren Platner , Windows on the World occupied 50,000 square feet ( 4,600 m ² ) of space in the North Tower . The restaurants operated from April 19 , 1976 until September 11 , 2001 when they were destroyed in the September 11 attacks
September 11 attacks
September 11 attacks
Windows on the World