The interior prayer hall of Al-Hakim Bi-Amr Allah Mosque on Al-Muizz Street (Shari' Al-Muizz) in Islamic Cairo, featuring a central aisle flanked by large stone columns, ornate crystal chandeliers, a decorated mihrab at the far end, and green patterned prayer carpets. The mosque was originally built by the Fatimid Caliph Al-Aziz Billah and completed under Caliph Al-Hakim Bi-Amr Allah around 1013 CE, making it one of the oldest and most historically significant mosques in Cairo. The space has been extensively restored and continues to function as an active place of worship.