World Trade Center consisted of two towers, also known as “The Twin Towers”, and they both were 110 floors. A floor was about 800.000m2. There were 198 lifts. It was built during the years 1966-1973 by Minoru Yamasaki. World Trade Center was the biggest building in 1972, but in 1973, it was surpassed by Willis Tower. From the spire and to the ground there was about 527,9 meter. It was placed in New York.
Terror:
The first time the building was in danger was February 13, 1975. It was some fire that broke out on the 11th floor of the north tower. The fire spread to the middle of the 9th and 14th floors. The area near the fire was almost extinguished immediately. The other places, where the fire had spread to, was turned off a few hours later. The largest fire damage had happened on the 11th floor. A few floors below the fire area was hit by water damage. When the fire occurred, the World Trade Center had still not put sprinkler systems.
Bomb:
The first time the building was in danger of terrorist attacks was February 26, 1993. A bomb had exploded in the underground car park, but the damage was limited. Some Islamist terrorists did it.
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