Built AD 876-879, this is the oldest surviving mosque in Cairo. It has many Mesopotamian features because it was constructed during the Abbasid dynasty, which was centered in Baghdad. The minaret, with its spiral exterior staircase, is the only one of its kind in Egypt. Daily 9 am until one hour after sunset prayer. No visitors are admitted during prayers. Free. El-Sabilah Street (at Ahmed Ibn Tulun Square—west of the Citadel), Cairo.
