UNDERGROUND MYSTERIES
Tunnels of Hagia Sophia
Secret Passages & Underground Caves Beneath the Monument
Beneath the magnificent dome of Hagia Sophia lies a hidden world of tunnels, cisterns, and secret passages that have fascinated explorers and archaeologists for centuries.
The Underground Cistern
A vast water storage system lies beneath Hagia Sophia, connected to the famous Basilica Cistern. These underground chambers were essential for the Byzantine city's water supply.
Secret Passages
Archaeological surveys have revealed a network of tunnels connecting Hagia Sophia to the Great Palace and other important Byzantine structures.
Burial Chambers
The subterranean levels contain ancient burial sites, including tombs of Byzantine patriarchs and Ottoman sultans.