At the corner of Suq al-Silah Street is a ruined domed structure. This is the gate to the palace of Manjak al-Yusufi al-Silahdar (the 'swordbearer' or 'armorer') - the same Manjak whose funerary complex is in the Bab al-Wazir cemetery. The gate was built at the beginning of his career, and his blazon with the sword of office is a prominent decoration. The shallow dome is also interesting as an example of a pure pendentive system. The collar of red stones in a zigzag pattern below the interior dome is striking. This gate was at the edge of Suq al-Silah, the Armorers' Bazaar, whose location near the Citadel was a logical consequence of its strategic importance and of the number of Mamluks quartered in the fortress. The trade of metalworking continues in this area today.

Source

Williams, Caroline. 2002. Islamic Monuments in Cairo: The Practical Guide. Cairo: American University of Cairo Press, 66.