The Longest Walls: Constantinople's Sea Defenses

Episode 208 of Fexingo History turns to the city's often-overlooked maritime frontier: the sea walls of Constantinople. From the Marmara shoreline to the Golden Horn, these defenses protected the Byzantine capital for over a millennium, yet they're rarely discussed alongside the famous Theodosian land walls. We explore their construction under Constantine and Theodosius II, their vulnerability to naval assault, the role of the boom chain across the Golden Horn, and how the walls were finally breached by the Fourth Crusade in 1204 and later by Mehmed II in 1453. Along the way, we meet the strategists who defended them—from the Byzantine admiral Niketas Oryphas to the Genoese mercenaries who held Galata—and discover how the sea walls shaped the city's identity as both a fortress and a port. This is the story of a city that looked to the sea for survival, and the walls that stood between it and the waves.

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