|Ahmad Ibn Tulun Mosque|
|Ahmad Ibn Tulun Mosque interior|
|Interior of Ahmad Ibn Tulun Mosque|
|Ahmad Ibn Tulun Mosque exterior|
Ahmad Ibn Tulun Mosque (Arabic: مسجد أحمد بن طولون) is located in Cairo, Egypt. It is arguably the oldest mosque in the city survived in its original form, and is the largest mosque in Cairo in terms of area.