Theodosius Cistern, also called Şerefiye Cistern, is a compact underground reservoir whose columns and domed roof reveal a carefully engineered part of Istanbul’s Byzantine water system. It stored water supplied through aqueducts for distribution to important urban structures.
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This cistern turns water infrastructure into architecture. Built during the reign of Theodosius II, between 428 and 443, it formed part of the system that brought water into Constantinople and distributed it to key monuments. The reservoir measures roughly 45 by 25 metres, with a roof supported by 32 marble columns.
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UpgradeQuick facts
- The cistern was constructed between 428 and 443 under Theodosius II.
- Its chamber is approximately 45 by 25 metres.
- Thirty-two marble columns support its roof.
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