Modern City · event 10 of 15

4 April 1973

The World Trade Center opens. The twin towers are dedicated, briefly the tallest buildings in the world. Their structural tube design, with the exterior wall carrying the load, allows enormous column-free floors.

The Modern City era

  1. 27 October 1904
  2. 25 March 1911
  3. 1916
  4. 1920
  5. 23 October 1929
  6. 1 May 1931
  7. 1934
  8. 28 June 1969
  9. 1969
  10. 4 April 1973
  11. 30 October 1975
  12. 11 September 2001
  13. 29 October 2012
  14. 1 January 2017
  15. 1 March 2020

See the full timeline or read the history of New York.