I always assumed Abstergo was in the United States, but after reading the writeup of Brotherhood, it says they drove to Monteriggioni, so that rules out driving across the Atlantic Ocean, unless they hopped on a plane and bought a van when they landed. My guess is they were somewhere in the Middle East, like Turkey or Syria since Lucy said they had to drive north to get to Monteriggioni after escaping Vidic at the end of the 2nd game, assuming they weren't already in Italy. But it says that Desmond was American, so he jumped across an ocean to escape his assassin training? Originally, I thought they were in Canada. Any thoughts or facts as to where Abstergo is located?