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 that included a restaurant called Windows on the World, it operated until 2001 when they were destroyed in the September 11 attacks (also referred to as 9/11) were a series of four coordinated terrorist attacks by the Islamic terrorist group al-Qaeda on which country?
September 11 attacks The September 11 attacks (also referred to as 9/11) were a series of four coordinated terrorist attacks by the Islamic terrorist group al-Qaeda on the United States on the morning of Tuesday, September 11, 2001. The attacks killed 2,996 people, injured over 6,000 others, and caused at least $10 billion in infrastructure and property damage. 
Bojinka plot The Bojinka plot (Arabic: بجنكة‎ ‎ ; Tagalog: "Oplan Bojinka" ) was a large-scale, three-phase attack planned by Islamists Ramzi Yousef and Khalid Sheikh Mohammed for January 1995. They planned to assassinate Pope John Paul II, blow up 11 airliners in flight from Asia to the United States with the goal of killing approximately 4,000 passengers and shut down air travel around the world, and crash a plane into the headquarters of the CIA in Fairfax County, Virginia.