1. When the Roman Emperor Titus pillaged the Holiest of Holies in 70 C.E. and had the Second Temple burnt to the ground, he gave instructions for his legions to leave part of the outer, western retaining wall intact. This was to demonstrate to posterity not only how well fortified the city of Jerusalem was, but to show the Jews, or any other citizens who thought they could challenge the Emperor's customs and laws, just how intrepid and formidable Rome's armies were.
2. As it's seen... READ ON