The Malian city of Timbuktu
The Malian city of Timbuktu had a 14th century population of 115,000 - 5 times larger than mediaeval London. Mansa Musa, built the Djinguerebere Mosque in the fourteenth century. There was the University Mosque in which 25,000 students studied and the Oratory of Sidi Yayia. There were over 150 Koran schools in which 20,000 children were instructed. London, by contrast, had a total 14th century population of 20,000 people.
*National Geographic recently described Timbuktu as the Paris of the mediaeval world, on account of its intellectual culture. According to Professor Henry Louis Gates, 25,000 university students studied there.
*Many old West African families have private library collections that go back hundreds of years. The Mauritanian cities of Chinguetti and Oudane have a total of 3,450 hand written mediaeval books. There may be another 6,000 books still surviving in the other city of Walata. Some date back to the 8th century AD. There are 11,000 books in private collections in Niger. Finally, in Timbuktu, Mali, there are about 700,000 surviving books.
*A collection of one thousand six hundred books was considered a small library for a West African scholar of the 16th century. Professor Ahmed Baba of Timbuktu is recorded as saying that he had the smallest library of any of his friends - he had only 1600 volumes