 The third bimaristan was built in 805 by Caliph Harun al-Rashid.This Islamic hospital in Baghdad was the first documented general hospital.Muhammad ibn Zakariya al-Razi, Hunayn ibn Ishaq, Ibn Sina (Avicenna), Ali ibn Isa al-Kahhal, Ibn al-Nafis, and Mir Mu’min Husayni Tunikabuni were all students that trained at Islamic hospitals in order to advance their knowledge in the medical field.