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May 29, 1453

The Fall of Constantinople

A 21-year-old sultan, a Hungarian cannon maker turned away by the emperor who couldn't pay him, and a gate someone forgot to lock

Jean-Joseph Benjamin-Constant, Public domain, via Wikimedia Commons

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Ottoman cannon fired at the Theodosian Walls of Constantinople for fifty three days straight, walls that had turned back every siege for a thousand years, and the walls held.

What let the army in was not the guns. It was a wounded commander carried off to the ships, and a small gate on the city's north side that somebody left open, or stopped defending, nobody agrees which.

An empire that had called itself Rome for eleven hundred and twenty three years ended through that gate, in the last hour of a siege the biggest cannon ever built had not quite won.

Scene 1The engineer he could not afford

In the months before the siege, a Hungarian engineer named Urban offers Constantine the Eleventh a cannon he says can break any wall in Christendom.

The emperor wants it. The treasury cannot pay him.

Urban crosses to Edirne instead, to a sultan who is twenty one years old and has been planning this siege since he was nineteen. Mehmed the Second pays him four times what he asked.

The result is twenty seven feet of bronze, needing sixty oxen and two hundred men to move, firing stone balls of roughly six hundred kilograms. Each shot takes three hours to load.

On the sixth of April, fourteen fifty three, that cannon, one of Mehmed's sixty nine guns, opens fire on the Theodosian Walls, six and a half kilometers of triple fortification built a thousand years earlier and never once broken.

Jean-Joseph Benjamin-Constant's painting depicts Mehmed II on horseback entering the conquered city. The painting reflects 19th-century French Orientalism as much as the 15th-century event itself.
Jean-Joseph Benjamin-Constant's painting depicts Mehmed II on horseback entering the conquered city. The painting reflects 19th-century French Orientalism as much as the 15th-century event itself.Jean-Joseph Benjamin-Constant, Public domain, via Wikimedia Commons (1876)

Scene 2The hill behind Galata

The twenty second of April. Mehmed orders seventy ships hauled out of the Bosphorus, dragged on greased logs over the hill behind Galata, and lowered into the Golden Horn on the other side.

The chain the Byzantines had stretched across the harbor mouth is still there. It no longer matters. The fleet is already inside it.

Constantine now faces the water from two directions at once, with seven thousand defenders, five thousand Greeks and two thousand foreign volunteers, to hold walls that once needed a garrison for a city of five hundred thousand.

That city had shrunk to fewer than fifty thousand people. Seven thousand men, most of them not soldiers by trade, were being asked to hold miles of land wall and sea wall against an army estimated at eighty thousand to two hundred thousand.

Scene 3The last liturgy

The evening of the twenty eighth of May. Inside the Hagia Sophia, Orthodox and Catholic clergy hold a joint service for the first time since the two churches split apart four centuries earlier.

Everyone in the building knows the walls will not hold until morning.

Constantine takes communion, asks forgiveness of anyone he has wronged, and rides to the walls.

Nicolo Barbaro was a Venetian surgeon inside the city that night, keeping a diary of what he saw.

Nicolo Barbaro · Diary of the Siege of Constantinople · 1453

“Nothing will ever equal the horror of this harrowing and terrible spectacle.”

The triple land walls built under Theodosius II (408-450) stretched 6.5 kilometers and withstood every siege for a thousand years until Mehmed II's cannon breached them in 1453. Substantial sections survive in modern Istanbul.
The triple land walls built under Theodosius II (408-450) stretched 6.5 kilometers and withstood every siege for a thousand years until Mehmed II's cannon breached them in 1453. Substantial sections survive in modern Istanbul.en:User:Bigdaddy1204, CC BY-SA 3.0, via Wikimedia Commons (2006)

Scene 4The gate

After midnight, the twenty ninth of May. Mehmed sends three waves at the walls in succession. Irregulars first, then Anatolian regulars, then the elite Janissaries.

Around four in the morning, Giovanni Giustiniani, the Genoese commander whose seven hundred volunteers formed the backbone of the defense, is wounded and carried to the ships. The gap he leaves does not close.

At almost the same hour, a group of Ottoman soldiers find the Kerkoporta, a small gate in the northern wall, either unlocked or simply undefended. Whether that was treachery, accident, or a story invented afterward is still argued. They go through it.

Constantine throws off the imperial insignia and charges into the breach with the guards still beside him.

Chroniclers who were not there, because no one who was there survived to tell it, recorded what Constantine is said to have shouted.

Constantine XI Palaiologos · Attributed last words · 1453

“The city is fallen and I am still alive.”

His body was never identified.

Scene 5The nave

By dawn, Ottoman flags fly from the towers. Mehmed rides into the city on horseback, straight to the Hagia Sophia, and orders it converted for Muslim worship.

The chronicler Tursun Beg, who was there, records that the sultan sat alone in the nave for a while and said nothing.

He allows three days of plunder, the customary right of a conquering army, then stops it and starts rebuilding.

Surveying the ruined Great Palace, Mehmed is said to have spoken a verse of his own.

Mehmed II · Attributed verse upon entering the ruined Great Palace of Constantinople · 1453

“The spider weaves the curtains in the palace of the Caesars. The owl calls the watches in the towers of Afrasiab.”

Five accounts

Five accounts of the same siege, and only two of them are the two sides most retellings remember.

  1. The Ottoman and Turkish account
  2. The Byzantine and Greek Orthodox account
  3. The Western European and Latin Christian account
  4. The Balkan Christian account
  5. The Venetian and Genoese merchants

The turn

And here is what none of the five fully accounts for.

  1. Ottoman / Turkish

    The Ottoman account names the firman and the rebuilt city, and passes quickly over the sack, the thirty thousand enslaved, and the execution of Loukas Notaras, the same admiral heard moments ago preferring the Sultan's turban to Rome's mitre.

    From the record
    The three-day sack and mass enslavement of 30,000+ inhabitants
    Forced population transfers to repopulate the city
    Execution of Loukas Notaras and other Byzantine nobles after the conquest
    Devshirme (child levy) intensification in conquered territories
  2. Byzantine / Greek Orthodox

    The Byzantine account, the one most Western listeners already hold, treats the empire's death as a martyrdom from outside. It says far less about a city that had already lost ninety percent of its people, or the civil wars that brought Ottoman troops in as allies long before they came as conquerors.

    From the record
    Byzantine internal decay; the city's population had fallen 90% from its peak
    Repeated Byzantine civil wars that invited Turkish intervention
    The 1204 Latin sack's role in making the empire too weak to survive
    Orthodox refusal to accept the Union of Florence, which might have secured Western military aid
  3. Western European / Latin Christian

    The Western European account is honest about twelve hundred and four, and quiet about the submission to Rome its own clergy had refused, the price of the help it says never came.

    From the record
    Byzantine appeals for Western aid that were conditioned on theological submission (Union of Florence)
    Individual Western volunteers who fought and died at the walls (Giustiniani's 700 Genoese)
    The genuine logistical impossibility of organizing a crusade during the Hundred Years' War
  4. Balkan Christian (Serbian, Bulgarian, Romanian)

    The Balkan account is right that the devshirme took children by force. It says less about the viziers who rose through that system, and the elites who converted and prospered under it.

    From the record
    Balkan Christian collaboration with Ottoman authorities; many local elites converted and prospered
    The devshirme as a pathway to power, since some of the empire's greatest viziers were devshirme graduates
    Periods of relative tolerance and economic prosperity under Ottoman rule
    Ottoman legal protections for Christian communities under the millet system
  5. Maritime / Commercial (Venetian and Genoese)

    And the merchants' account, counted in treaties and pepper margins, says nothing of the war Venice fought against that same empire within ten years of the peace.

    From the record
    Individual Italian volunteers who died defending Constantinople
    Genuine religious grief among Italian populations, as distinct from state policy
    Venetian-Ottoman wars (1463-1479) that followed the initial accommodation
    The role of Italian naval technology in enabling Ottoman maritime expansion

Close

The Hagia Sophia outlasted every argument made in its name. A cathedral for nine hundred and sixteen years. A mosque for four hundred and eighty one years, starting the year the city fell. A museum from nineteen thirty four. A mosque again from two thousand and twenty.

The record

By the numbers

Span
145353-day siege
Killed
~4Kdefenders killed in final assault; civilian deaths…
Displaced
~50Kinhabitants of Constantinople; Greek-speaking Christian…
Place
Byzantine Empire / Ottoman Empire

Key figures

  • Mehmed II (Mehmed the Conqueror)Ottoman Sultan, besieged and conquered Constantinople at age 211432 to 1481
  • Constantine XI PalaiologosLast Byzantine Emperor, killed defending the walls on May 291405 to 1453
  • Giovanni GiustinianiGenoese commander of 700 volunteers, led the defense until wounded in the final assault1418 to 1453
  • Urban (Orban)Hungarian cannon engineer who offered services to Byzantines first (they could not afford him), then cast Mehmed's great bombard
  • Cardinal BessarionGreek scholar and Catholic cardinal who donated 482 Greek manuscripts to Venice, forming the Biblioteca Marciana1403 to 1472
  • Gennadios II ScholariosFirst Ecumenical Patriarch under Ottoman rule, appointed by Mehmed II to lead the Orthodox Church1400 to 1473
  • Loukas NotarasLast megas doux (grand admiral) of the Byzantine Empire; reportedly said he would rather see the Turkish turban than the Latin mitre1402 to 1453

Primary sources

Mehmed II · Attributed verse upon entering the ruined Great Palace of Constantinople · May 29, 1453

“The spider weaves the curtains in the palace of the Caesars; the owl calls the watches in the towers of Afrasiab.”

Constantine XI Palaiologos · Last words attributed by multiple chroniclers, though none witnessed his death · May 29, 1453

“The city is fallen and I am still alive.”

Loukas Notaras · Attributed remark reflecting Orthodox hostility to Catholic reunion; authenticity debated · c. 1452

“I would rather see the Turkish turban in the midst of the city than the Latin mitre.”

Attributed to the Prophet Muhammad · Hadith from the Musnad of Ahmad ibn Hanbal · 7th century (hadith compilation 9th century)

“Verily you shall conquer Constantinople. What a wonderful leader will he be, and what a wonderful army will that army be!”