Qualla: Babylon Fortress

Babylon Fortress: Introduction

Fri, 27 Mar 2026 00:00:00 GMT

Photo credit Diego Delso, CC BY-SA 3.0. There is a place in Cairo called Babylon, and it has nothing to do with Iraq -- or rather, everything to do with it by way of a twenty-five-century game of telephone. According to the seventh-century writer John of Nikiu, Nebuchadnezzar II campaigned in this part of Egypt around 568 BC and named the settlement after his capital on the Euphrates. Egyptologists suggest the name actually derives from Perhabinon, an older Egyptian toponym, filtered through centuries of linguistic drift. Whatever the etymology, Babylon Fortress stands today in Old Cairo as a Roman fortification wrapped around some of the most sacred sites in Coptic Christianity.

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Image: Diego Delso | CC BY-SA 3.0

Babylon Fortress: Where the Nile Met the Red Sea

Fri, 27 Mar 2026 00:00:00 GMT

Photo credit Samir I. Sharbaty, CC BY-SA 3.0. Babylon occupied a strategic position that few sites in Egypt could rival. It sat at the boundary between Lower and Middle Egypt, where river craft paid tolls ascending or descending the Nile. More critically, it guarded the entrance to the Canal of the Pharaohs, an ancient water...

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Image: Samir I. Sharbaty | CC BY-SA 3.0

Babylon Fortress: Diocletian's Massive Walls

Fri, 27 Mar 2026 00:00:00 GMT

Photo credit Daniel Mayer, CC BY-SA 4.0. The fortress visible today dates primarily to around 300 AD, when Emperor Diocletian expanded the fortifications after the Crisis of the Third Century had exposed the fragility of Rome's eastern defenses. The new fortress was enormous, anchored by two massive round towers that fl...

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Image: Daniel Mayer | CC BY-SA 4.0

Babylon Fortress: From Bishops to Byzantines

Fri, 27 Mar 2026 00:00:00 GMT

Photo credit Roland Unger, CC BY-SA 3.0. Babylon became the seat of a Christian bishopric, a suffragan of Leontopolis in the Roman province of Augustamnica Secunda. After the Council of Chalcedon in 451 split Christianity over the nature of Christ, most of Babylon's bishops rejected the council's conclusions -- an early...

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Image: Roland Unger | CC BY-SA 3.0

Babylon Fortress: Seven Months Against the Arab Conquest

Fri, 27 Mar 2026 00:00:00 GMT

Photo credit لا روسا, CC BY-SA 3.0. In 640 CE, the Arab general Amr ibn al-As arrived at Babylon's walls with an army intent on conquering Egypt. The Byzantine garrison held out for approximately seven months -- one of the longest sieges of the entire Arab conquest -- before the fortress fell in December 640. John ...

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Image: لا روسا | CC BY-SA 3.0

Babylon Fortress: Sacred Ground Within Ancient Walls

Fri, 27 Mar 2026 00:00:00 GMT

Photo credit Roland Unger, CC BY-SA 3.0. Today, the fortress's former enclosure holds the Coptic Museum, several churches including the Hanging Church -- which sits atop one of the Roman gate towers -- and the Church of St. George. The round towers themselves, visible from street level, are among the most tangible Roman...

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Image: Roland Unger | CC BY-SA 3.0