In this photo taken Tuesday, May 21, 2013, an Egyptian family walks at the Saladin Citadel, the mosque of Mohammed Ali in the background, a medieval Islamic fortification that forms a centerpiece of ... more 
In this photo taken Tuesday, May 21, 2013, an Egyptian family walks at the Saladin Citadel, the mosque of Mohammed Ali in the background, a medieval Islamic fortification that forms a centerpiece of the historical Fatimid Cairo, Egypt. Cairo, the Arab world's most populated city, is often referred to as an open-air museum of Islamic antiquities and the city of 1,000 minarets. But its rich history and contributions to Islamic art has languished. (AP Photo/Nasser Nasser) less 
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Associated Press | Photo By Nasser Nasser
Thu, May 23, 2013 1:49 PM EDT