Historical landmark
The Walls of Istanbul
Derviş Ali, Hoca Çakır Cd. No:1, 34087 Fatih/İstanbul
Triple-walled land fortification from the fifth century, once impenetrable for over a millennium.
This guide to the Walls of Istanbul opens with a Hungarian engineer named Orbán arriving in Constantinople in 1452 with a proposal for the largest cannon the world had seen, and the empty imperial treasury that turned him away before the sultan's court took him in. It reaches back to Emperor Theodosius the Second, whose triple barrier of moat and stone had turned away every army approaching by land for over a thousand years. It also follows Emperor Constantine XI, the last Byzantine ruler, as the great cannon was hauled west to the wall beside you.
Audio guides are written and narrated by AI.