Hvornår blev world trade center først bygget?
1973
Construction of the World Trade Center
Ceremonien for tagudvidelsen af 1 WTC (det nordlige tårn) fandt sted den 23. december 1970, mens ceremonien for 2 WTC (det sydlige tårn) fandt sted senere, den 19. juli 1971. De første lejere flyttede ind i det nordlige tårn den 15. december 1970 og i det sydlige tårn i januar 1972. Bygningerne blev indviet den 4. april 1973; Tobin, som havde sagt op året før, var fraværende ved ceremonierne.
1973
Construction of the World Trade Center
The topping out ceremony of 1 WTC (North Tower) took place on December 23, 1970, with 2 WTC's ceremony (South Tower) occurring later on July 19, 1971. The first tenants moved into the North Tower on December 15, 1970, and into the South Tower in January 1972. The buildings were dedicated on April 4, 1973; Tobin, who had resigned the year before, was absent from the ceremonies.
Construction of the World Trade Center