World Trade Center

The World Trade Center had two 110-story buildings, known as the Twin Towers and five smaller buildings.

  • Tower One was 1,368 feet (414 meters) tall.
  • Tower Two was 1,362 feet (412 meters) tall.
  • The Twin Towers were the tallest until the Sears Tower surpassed them.
  • Architects: Minoru Yamaski & Associates and Emery, Roth & Sons.
  • Built of aluminum and steel.
  • The foundation of each tower extended more than 70 feet below ground, resting on solid bedrock.
  • Constructed on six acres of landfill.
  • The towers were the best known examples of ›tube buildings‹, which are strenghtened by closely spaced columns and beams in the outer walls.
  • Each tower consisted of 104 passenger elevators and 21,800 windows.
  • About 50,000 people worked in the complex, which housed the offices of more than 430 businesses from 26 countries.
  • Completed in 1970.
  • Automatic window-washing machines cleaned 600,000 square feet of glass.

Source: World Trade Center and PBS

Skyline Manhattan   World Trade Center - Fog