I believe they were built in 1998.
the south tower
Work began in august 1966, the North Tower (1) was completed in December 1970 and the South Tower (2) was finished in July 1971.
gjtojhydt;hyhyhyhyof
When it's built
New York, America
The two Twin Towers of the old World Trade Center were called the North Tower, and the South Tower.
Neither - they were built the same size !
The south tower collapsed at 9:59.
It was 1362ft, 6ft shorter than the North tower.
south America
There was 107 floors.