Medina Azahara (Arabic: مدينة الزهراء‎‎ Madīnat az-Zahrā: literal meaning "the shining city") is the ruins of a vast, fortified Arab Muslim medieval palace-city built by Abd-ar-Rahman III al-Nasir, (912–961) Umayyad Caliph of Córdoba, and located on the western outskirts of Córdoba, Spain. It was an Arab Muslim medieval town and the de facto capital of al-Andalus, or Muslim Spain, as the heart of the administration and government was within its walls. Built beginning in 936-940, the city included ceremonial reception halls, mosques, administrative and government offices, gardens, a mint, workshops, barracks, residences, and baths. Water was supplied through aqueducts.