Some institutions that hitherto were not rooted in early Islamic world. We refer to: public hospitals, psychiatric hospitals, public libraries, universities, astronomical observatories, research centers, etc.. Thus, the oldest university in the world was Al-Qarawiyyin in Fes, Morocco, founded in 859. Of a similar age is Al-Azhar University in Cairo, founded a century later, in 975.
By the tenth century, Cordoba had 700 mosques, palaces 60,000 and 70 libraries, most of them with 600,000 manuscripts. Throughout Al-Andalus, were published each year treated more than 60,000 poems, polemics and compilations. Library in Cairo had over two million volumes and one in Tripoli apparently had over three million works to be destroyed by the Crusaders. Papers written Arabic mathematical sciences in the Middle Ages in number and importance beyond what is written in classical Greco-Roman period.
A pronounced qualitative transformation suffered a library, from simple deposit of manuscripts in real public libraries in the modern sense of the word, science and education centers, where the prevalent ideas and theories, where they held meetings for discussion and polemics.
Another feature of the Golden Age of Islam is the existence of a large number of scientists, comparable with those people of the Renaissance (Leonardo da Vinci), ie multidisciplinary scholars. Among them were noted: Al Biruni, Al-Jahiz Al-Kindi, Avicenna, Geber, al-Idrisi, Avenzoar, Alhazen, Ibn al-Nafis, Ibn Khaldun, Al-Horezmi Al-Masudi, al-Muqaddasi, Al coughed.
Source : http://ro.wikipedia.org/wiki/Epoca_de_aur_a_islamului