"Ibn Khaldun was a brilliant North African polymath of Arab descent who was born Tunis but travelled extensively throughout North Africa. He was a statesman, philosopher, Islamic theologian and jurist, historian, astronomer, mathematician, economist, poet, and social scientist and is widely considered to be the father of historiography, cultural history, demography, philosophy of history, and sociology." - @Davia Bailey
Helmet, Egyptian, c. 1293-1341. This helmet bears the name of the Mamluk sultan Ibn Qalaun, who ruled from Cairo a century before Barquq, the sultan who appointed and dismissed Ibn Khaldun as chief justice on several occasions.
Nasir al-DIn Tusi was a Persian polymath and prolific writer: an architect, astronomer, biologist, chemist, mathematician, philosopher, physician, physicist, scientist, theologian and Marja Taqleed. He was of the Ismaili-, and subsequently Twelver Shī‘ah Islamic belief. The Muslim scholar Ibn Khaldun considered Tusi to be the greatest of the later Persian scholars.
14 of the Oldest Mosques in the World | Sacred Footsteps | Zaytuna Mosque, Tunis, Tunisia: 113 AH. " According to historian Ibn Khaldun, the mosque was built in 731AD. The building was also host to one of the earliest universities of Islam, producing a number of scholars, including Ibn Khaldun himself. The columns within the mosque were recycled from the Roman city of Carthage."
The eye according to Hunain ibn Ishaq from manuscript, c.1200CE. Location: Cairo National Library. Hunayn ibn Ishaq's developments in the study of the human eye are in his innovative book, “Ten Treatises on Ophthalmology.” This textbook is the 1st known systematic treatment of this field and was probably used in contemporary medical schools. Hunayn explains the eye and its anatomy in minute detail its diseases, their symptoms, their treatments.