The Mosque of Ibn Tulun (Arabic: مسجد إبن طولون, romanized: Masjid Ibn Ṭūlūn) is a historic mosque in Cairo, Egypt. Built between 876 and 879 by its namesake, Ahmad ibn Tulun, it is the oldest well-preserved mosque in Egypt.[1][2] Its design was inspired by the 9th-century mosques of Samarra in Iraq, the Abbasid capital at the time, making it an important representative of classical Abbasid architecture.[3][2]Today, it is one of the most significant monuments of Islamic architecture in Egypt. Source: en.wikipedia.org/wiki/Mosque_of_Ibn_Tulun