Al-Qarawiyyin library in Fez, Morocco opened in 1359 C.E., at the University of Al-Qarawiyyin (also the world's oldest, built in 859 C.E.). The library has since been restored to its former glory, and the precious documents that were once under lock and key are now available to the public.
The al-Qarawiyyin Library was created by a woman, challenging commonly held assumptions about the contribution of women in Muslim civilization. The al-Qarawiyyin, which includes a mosque, library, and university, was founded by Fatima El-Fihriya, the daughter of a rich immigrant from al-Qayrawan (Tunisia today). Well educated and devout, she vowed to spend her entire inheritance on building a mosque and knowledge center for her community.
According to UNESCO, the result is the oldest operational educational institution in the world, with a high-profile role call of alumni. Mystic poet and philosopher Ibn Al-‘Arabi studied there in the 12th century, historian and economist Ibn Khaldun attended in the 14th century, while in medieval times, Al-Qarawiyyin played a leading role in the transfer of knowledge between Muslims and Europeans.
Al-Qarawiyyin university is only 30 years younger than the city of Fez itself. Around the same time the library was being built, algebra (itself a Muslim invention) was just making its way into Europe. It's fitting, then, that the library contains not only a treasure trove of priceless religious texts, but also numerous mathematical and scientific works as well.
According to historyofinformation