Old Cairo dates back to 6th century BC when the Persians controlled Egypt, and is rich in buildings representing the ensuing historical periods, the successive rulers, and the spectrum of past and current religious practices. When the Romans established rule, they built the Babylon Fortress, whose walls still partially stand and now support some of the city’s oldest Christian churches, including the Hanging Church, which is suspended over the old Roman gates. Other Coptic churches include St. George Church, St. Serguis Church — said to be built on the spot where the Holy family stopped to rest during their flight to Egypt and today draws many pilgrims, and St. Barbara Church. The Ben Ezra Synagogue, originally built as a church and later converted to a synagogue, is said to be on the site where baby Moses sheltered in the reeds. The Citadel of Salah El- Din was built to defend against the 12th century Crusaders, while the Alabaster Mosque of Mohamed Ali was built only 200 years ago. An intoxicating quarter of Old Cairo is the Khan El Khalili Bazaar, an exotic medieval market snaking through narrow passageways, lanes and alleys lined with tiny shops stacked floor-to-ceiling with caftans, brass, inlaid wood, leather cases, copper goods, carpets, gold and silver jewelry, and perfumes. The tour should end Qahwat al-Fishawi – Fishaw Cafe – where the same family has served coffee and mint tea for over 200 years.