The Citadel, one of world's greatest monuments to medieval warfare

Dates from period the Ottomans controlled Egypt, serving as military base, fortress, and royal city

Mohammed Ali (Alabaster) Mosque with huge central dome, 4 semi-domes

Yusuf's well  in enclosure and small museums along sides

Fawzy talks about 3 religions: Islamic, Christian, and Jewish

Walls elaborately decorated with golden architecture

Modeled along classic Turkish lines; Ali's body in tomb in prayer hall

Awesome views of the city of Cairo from the surrounding walkway

Signs of churches in "Coptic Cairo" area settled from 6th C BC

St. Sergius church is 4th C church dedicated to 2 martyrs, supposedly built on spot where Holy Family rested at end of their journey

Shroud that is kissed by all who enter the sacred crypt, oldest Christian church

Entrance to Ben Ezra's Temple, which contains Jewish heritage library

Interior of temple where documents known as "Jineesah" were found

One of the souvenir shops in area of church buildings

Ruins surrounding Old Cairo (Masr el Qadima) area

Another church in Egypt's center of religions

Stairway to church dedicated to Virgin Mary built in 3rd or 4th C, destroyed and rebuilt in 11 C - has twin bell towers

"Hanging Church" derives name from location on top of Water Gate of old Babylon fortress with nave suspended above passage

Three-barrel-vaulted roofs are supported on columns with Corinthian capitals