The World Trade Center was a large complex of seven buildings in New York City's Downtown Manhattan neighborhood in the United States. The WTC was most famous for the "Twin Towers", WTC 1 (the North Tower) and WTC 2 (the South Tower). From 1975 to 1985, $2,300,000,000 was spent on the construction of the buildings, the center of Western finances. On 26 February 1993, the World Trade Center was targeted by Ramzi Yousef, Eyad Ismoil, and al-Qaeda in a failed car bombing that killed 6 people and wounded 1,042. The worst that could happen occurred on 11 September 2001 when American Airlines Flight 11 crashed into the North Tower and United Airlines Flight 175 into the South Tower after being hijacked by al-Qaeda terrorists; the infamous 9/11 attacks claimed the lives of almost 3,000 people. The two towers collapsed as a result of the heavy impact of the plane crashes, and the nearby WTC 7 building collapsed due to damage. The ruins, known as "Ground Zero", were empty for thirteen years, but the One World Trade Center (also known as the "Freedom Tower") finished construction in November 2014, after the 21 May 2014 completion of the National September 11 Memorial & Museum.