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Theodosian Walls and the Echoes of Constantinople’s Last Stand

“What would have happened if Constantinople, the capital of Byzantium, hadn’t been conquered by the Turks in 1453?” This question has haunted me for a very long time. I think the first time I seriously pondered it was after reading (and re-reading, devouring, until the book was physically worn out 🙂) The Fall of Constantinople by Vintilă Corbul back in 1985. I was utterly captivated by the world described in the book, the historical figures, the events, and the political realities and cynicism of that era.


lived the heartbreak of Western "betrayal," the anguish of Byzantine elites, and the failure of the desperate attempts by Constantinople's leaders to save the city. I was intrigued by the narrow interests and cynicism of a large portion of Byzantine society, deeply divided even in its final moments—a reality that accelerated and, in many ways, caused the fall of the city to the Ottomans. I "fought" on the Theodosian Walls alongside the city’s defenders and was left with the harrowing image of the massacre and looting that followed the conquest.

Ancient stone fortress with tall towers and crenelated walls, surrounded by lush greenery and a clear blue sky. No visible text.
Theodosian Walls, Istanbul, Turkey

With these vivid images in my mind, I sought out every possible resource describing the siege and capture of Constantinople on May 29, 1453. After 1996–1997, thanks to the internet, I gained a much deeper understanding of the historical period that had captivated me since my teenage years.


In 2004, I read another historically accurate book about the events of 1453: The Dark Angel by Mika Waltari. While the plot revolves around an imaginary, beautiful, and impossible love story set against the backdrop of the Byzantine Empire’s final months, the book reconnected me with the city’s tragedy. With a different perspective and greater knowledge, I was less drawn to the military aspects and more focused on the social and political dynamics of the time. Waltari’s depiction of the stark contrasts between Western and Eastern cultures in the context of the Ottoman Empire’s relentless expansion, fueled by Sultan Mehmed II’s ambitions, was deeply compelling.


The author’s portrayal of Giovanni Giustiniani Longo, the Genoese commander of the city’s defenses until shortly before the Ottoman troops broke through, was particularly striking—an expertly drawn portrait of a military leader of the era. Even with a more mature outlook, I once again found myself "fighting" on the Theodosian Walls alongside Giustiniani and Constantinople’s defenders.

Ancient stone walls with towers under a cloudy blue sky, surrounded by a grassy lawn. A small sign reads "Trip and Zip."
Blachernae Walls, Istanbul, Turkey

This rather long introduction 🙂 explains the mental image I had of Istanbul/Constantinople before deciding to spend a very special long weekend in the city on the shores of the Bosphorus. Of course, my vision was overly simplistic, as I preferred to focus on the single year of 1453 while consciously ignoring over 2,000 years of the city’s history, expansion, and decline. 🙂 Let’s just blame Vintilă Corbul and Mika Waltari for that!


I don’t intend to write a traditional travel guide to Istanbul here, though the city is more than worthy of one. Without delving into too much detail, a walk through Hagia Sophia, the Blue Mosque, the Topkapi and Dolmabahce Palaces, and the many other mosques, churches, fortified walls, and streets steeped in Roman, Byzantine, and Turkish history is highly recommended! Not to mention wandering through Beyoglu, Istiklal Caddesi, or the streets around the Galata Tower.


Instead, I’ll highlight a few landmarks that fully satisfied my thirst for history, antiquity, and ingenious architectural solutions of the past.


  1. The Theodosian Walls

This formidable system of fortifications, initiated by Emperor Theodosius II in the 5th century, protected the city for over 1,000 years and was only breached twice. The first time was during the Fourth Crusade led by Venice’s Doge Enrico Dandolo (though the Crusaders entered through the less fortified seaward walls, so "breached" may not be the right term). The second time was in 1453, during the powerful Turkish artillery siege. The Ottoman troops penetrated the shattered walls near the Gate of St. Romanus, overwhelming the exhausted defenders, who were vastly outnumbered and demoralized after Giustiniani, their effective commander, was injured and withdrew.


Some experts suggest that the Ottoman entry was less due to the walls failing and more to a disastrous maneuver—or perhaps betrayal—that led to the loss of control over one of the secondary military gates. Emperor Constantine XI Palaiologos chose to die in battle, alongside much of the Byzantine military elite. After the defensive system collapsed, the city suffered a total looting, and a great civilization vanished. The Byzantine double-headed eagle was replaced by the crescent moon.


Ancient stone fortress with towers and a walkway, surrounded by lush green trees. Blue sky in the background. Calm and historic atmosphere.
Theodosian Walls, Istanbul, Turkey

My obsession with the crenelated Theodosian Walls is beyond reason. They are more than fortifications—they are a silent witness, a guardian of history, a battlefield frozen in time. Their imposing battlements, jagged edges, and indomitable layers of stone have absorbed the weight of wars, the desperate cries of defenders, and the thunder of siege engines. To stand before them is to touch history itself, to feel the tension of that final battle, the whispers of a civilization that fought until its last breath.


Today, although large sections of the walls are missing and some restored parts are questionable in terms of materials used, you can still get a good sense of what the city’s defenses were like during the siege. And if you let your imagination take over, the crenelated walls rise once again, and you can almost hear the clash of steel, the last desperate war cries of the defenders, the rumble of Mehmed II’s cannons in the distance.


The Theodosian Walls are not just stone and mortar—they are a monument to resilience, a battlefield frozen in time, and a reminder that even the mightiest fortresses can fall.


  1. Basilica Cistern

An ingenious solution for supplying the city with water, this 6th-century Byzantine structure built under Emperor Justinian is a marvel of engineering. Its cathedral-like atmosphere is created by over 300 marble columns and vaulted arches, a striking combination of Roman and Byzantine architecture.


Ancient cistern with illuminated columns in warm orange hues, reflecting in water. Arched ceilings create a mysterious, tranquil setting.
Basilica Cistern, Istanbul, Turkey
  1. The Area Around Galata Tower

This charming neighborhood is full of quaint streets with cafés, fruit stalls, and countless shops selling musical instruments, ranging from traditional Turkish items to the latest mixers and sound equipment.


As we strolled through the small shops selling books and CDs, we discovered the music of a remarkable composer, Can Atilla. Naturally, I left with one of his albums, titled 1453 Sultanlar Aşkın—a name seemingly destined to align with my vision of Istanbul/Constantinople.



There is so much to see in Istanbul, but I focused on finding traces of the dramatic year of 1453: fortifications, defensive towers, and remnants of Byzantine engineering. The Theodosian Walls remain central to my mental exercise that began in my adolescence: 


"What if the Ottoman army had been repelled by the Christians in May 1453? What if cannons hadn’t been invented, or if the Genoese commander Giovanni Giustiniani had successfully defended the city? How might the city of Constantine the Great—today’s Istanbul—have developed? "...It all comes back to those incredible, crenelated, and haunting Theodosian Walls.

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