Work / monument · monument

Walls of Constantinople

completed 413 CE · 5th century · Also known as Theodosian Walls

The Walls of Constantinople were the fortifications protecting the Byzantine capital, above all the land walls known as the Theodosian Walls, completed in 413 CE. Their triple line of moat, outer wall and inner wall made the city almost impregnable for centuries. Accounts of the Byzantine Empire treat them as central to the empire's survival, until they were breached by Ottoman artillery in 1453.

Walls of Constantinople
Image: Apaleutos25 · CC BY-SA 4.0 · Wikimedia Commons

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Cite this entry
APA
The Epoch Institute. (2026). Walls of Constantinople. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/walls-of-constantinople
MLA
“Walls of Constantinople.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/walls-of-constantinople. Accessed .
Chicago
The Epoch Institute. “Walls of Constantinople.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/walls-of-constantinople.
Harvard
The Epoch Institute (2026) ‘Walls of Constantinople’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/walls-of-constantinople (Accessed: ).

Last reviewed October 2026Random entry ↻