high-rise building

Two 110-story towers. The essential structure consists of 2 square hollow tubes with the inside floor areas column-free. The observation deck on the roof is 1377 ft above ground.

View of the World Trade Center Towers looking up from the plaza. The view shows the structure of the outside load-bearing walls which form the tubes.

View of the base of the World Trade Center Towers (building to the right). The allusion to Gothic tracery at the bottom of the towers matches in height the interior lobby where the column width and window areas can be larger.

Further example of building overhang supported on variable depth cantilevers. Note that adjacent cantilevers have common tip displacement.
| period | description |
|---|---|
| 1966–1973 | planning and construction period |
| 9/11/2001 | Vollständige Zerstörung durch einen Terroranschlag |
| description | amount/size |
|---|---|
| height 1350 feet |
412 m |