The Ibn Tulun Mosque was completed in 879 AD on Mount Yashkur in a settlement named al-Qata'i by the founder of Egypt's Tulunid Dynasty Ahmed ibn Tulun (868-905 AD), The mosque that he had built over a period of three years of mudbrick became the focal point of the Tulunid capital that lasted only 26 years. It was the third congregational mosque to be built in what is now greater Cairo, and at approximately 26,318 square meters in size, is the third largest mosque in the world. It is the oldest mosque in Egypt that has survived in a fairly original form. An ancient calligraphy in 9th century Kufic script provides.
IWNTA - SIGHTSEEING - Cairo - Ibn Tulun Mosque