Mosque of Ibn Tulun built
879 CE.
Shown on the map at 30.029°, 31.250°.
The Mosque of Ibn Tulun (Arabic: مسجد إبن طولون, romanized: Masjid Ibn Ṭūlūn) is a mosque in Islamic Cairo, Egypt. Built between 876 and 879 CE by its namesake, Ahmad ibn Tulun, it is the oldest well-preserved mosque in Egypt. 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. It is one of the most significant monuments of Islamic architecture in Egypt. The mosque consists of a large open courtyard surrounded by roofed sections that are divided into aisles by rows of pointed arches. The arches are decorated with carved stucco, though not all of the original decoration has been preserved. The mosque is surrounded by an outer enclosure, the ziyada. The minaret, which has an unusual form with an external spiral staircase, stands in this enclosure. Various additions and restorations were made after the 9th century, including an important renovation by the Mamluk sultan Lajin in 1296. The present-day fountain and domed kiosk in the center of the courtyard date from this restoration.
Text from the Wikipedia article Mosque of Ibn Tulun, licensed CC BY-SA 4.0.