The Medina of Tunis was one of the most important Islamic cities. It contains some 700 monuments, including palaces, mosques, mausoleums, madrasas and fountains dating from the Almohad and the Hafsid periods. These ancient buildings include:- The Great Mosque (including the Muslim University and library) - Aghlabid Ez-Zitouna Mosque ("Mosque of the Olive") built in 723 by Obeid Allah Ibn-al-Habhab to celebrate the new capital. - The Dar-al-Bey, or Bey's Palace, comprises architecture and decor