The Bab Tuma (English: Gate of Thomas) is the northeastern gate of the Old City of Damascus.
In 1191, this gate was the means by which the Assassin Altaïr Ibn-La'Ahad entered Damascus during his hunt for the Templar black arms merchant Tamir. As the Saracens guarding the gate would not have permitted the entry of an Assassin, Altaïr sneaked in by blending with a group of scholars. The scholars assisted Altaïr in gratitude for rescuing one of their own from the harassment of Saracen soldiers just moments earlier.
Behind the scenes
Even though the gate is meant to represent the Bab Tuma in Damascus, its overall design appears to be inspired by the Damascus Gate in Jerusalem. However, this is anachronistic as the Damascus Gate was built in 1537 in reality.