WTC 7, a 47-story office building, opens in 1987. Investment bank Salomon Smith Barney is the main tenant. Other tenants include American Express Bank International, ITT Hartford Insurance Group, the Securities and Exchange Commission and Standard Chartered Bank.
Occupants evacuate WTC 7 on the morning of 9/11. As the North Tower collapses, debris hits WTC 7's southern facade, triggering a major fire. Debris from the Twin Towers damages a water main that supplies WTC 7's sprinkler system, depriving it of water to douse the flames. The fire burns uncontrolled for hours until WTC 7 collapses at 5:20 pm on 9/11.
Construction of a new WTC 7 starts in 2002. The 52-story tower is completed in 2006. Major tenants include Moody's, WestLB, New York Academy of Sciences, Arnell Group, Ameriprise Financial, BMI, Silverstein Properties and Mansueto Ventures.