Mosque of Ibn Tulun
What the experts agree on
Cairo's best-preserved 9th-century mosque impresses with its massive scale—built in 879 to fit Ahmad Ibn Tulun's entire army. Its original architecture survives largely intact, making it uniquely authentic among Cairo's Islamic landmarks.
"This huge congregational mosque was built in 879 by Ahmad Ibn Tulun with the intention of accommodating his entire army during Friday prayers." Full review
"This huge and magnificent mosque and enclosure is almost all that remains of a 9th-century city built here by an enterprising upstart named Ahmad Ibn Tulun" Full review