Basilica Cistern Tickets & Tours
Descend into the Basilica Cistern, the atmospheric underground Byzantine water reservoir beneath Sultanahmet, where rows of columns rise from still water, lit dramatically, with the mysterious carved Medusa heads at its base. A cool, otherworldly contrast to the city above.
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Basilica Cistern in Istanbul — FAQ
What is the Basilica Cistern?
The Basilica Cistern is a vast 6th-century underground reservoir built by the Byzantines, with 336 columns rising from the water, dramatic lighting and two famous Medusa-head column bases.
Should I book Basilica Cistern tickets in advance?
Yes — the cistern is very popular with long queues; skip-the-line tickets save time, especially in peak season, and an evening visit is atmospheric.
Why are there Medusa heads in the cistern?
Two columns rest on ancient Medusa-head bases, reused from older Roman structures and placed sideways and upside-down; their origin is uncertain, adding to the cistern’s mystery.