If you mean for the attack, then they were chosen because they were very high profile and would cause the maximum amount of publicity.
Although the World Trade Center Complex itself was proposed in 1943, it was the chosen architect for the WTC, Minoru Yamasaki, who proposed the design involving twin towers in 1969.
The twin towers were never rebuilt or renamed. They are still simpily called the twin towers.
twin towers
* he was a cleaner in the twin towers
the twin towers were 110 stories tall.
lots 1 the twin towers
The petronas twin towers.
osama bin laden did and name the twin towers
Osama bin Laden did and name the twin towers
The Twin Towers no longer exist.
No, the Twin Towers were made out of cement and steel.
the us did NOT MAKE THE TWIN TOWERS CALLAPSE