Shaar Harachamim The Sealed Gate
Why is this gate known as Sha’ar Harachamim (Mercy Gate) sealed?
At one time this gate was the only direct entrance to the TempleMount area from outside the city. When the Muslims became aware of an ancient tradition that Mashiach would come through this gate on his way to redeeming Israel, they sealed it in order to block his arrival. They made another move that they hoped would discourage the redeemer by burying their dead in front of the gate.