Historic centres of learning in the Maghreb

On this map, you can find some old centres of learning (mosques) in the Maghreb that have had a great influence on the region and the world in general. Many of these centres not only focused on Islamic sciences but also taught and contributed to subjects such as medicine, mathematics and astronomy. The map shows the centres I've found. This doesn't mean that there are no other centres that should be on this map. I intend to add new examples as I find them.