English: Old cairo between history and future.jpg Essam Azzam St. (Shariʻa al-Muizz li-Deen Illah) (30°02′ 48" N 31°15′ 36"E) in Islamic Cairo, Egypt is one of the oldest streets in Cairo, approximately one kilometer long. A United Nations study found it to have the greatest concentration of medieval architectural treasures in the Islamic world.[1] The street (shariʻa in Arabic) is named for Al-Muʿizz li-Deen Illah, the fourth caliph of the Fatimid dynasty. It stretches from Bab Al-Futuh in the north to Bab Zuweila in the south. Starting in 1997,[2][3] the national government carried out extensive renovations to the historical buildings, modern buildings, paving, and sewerage to turn the street into an "open-air museum". On April 24, 2008, Al-Muizz Street was rededicated as a pedestrian only zone between 8:00 am and 11:00 pm; cargo traffic will be allowed outside of these hours.[4] The northern part of the street extends from the Al-Hakim Mosque in the north to the Spice Market at Al-Azhar Street and includes the antiques markets section, Al-Aqmar Mosque (one of the few extant Fatimid mosques), the Qalawun complex, and several well preserved medieval mansions and palaces.