

The Theodosius Cistern. Istanbul 2023. This 1,600-year-old c..
Added 2024-03-11 18:42:15 +0000 UTCThe Theodosius Cistern. Istanbul 2023.
This 1,600-year-old cistern is older than the Hagia Sophia and an important cistern. Rainwater harvesting.
Was built by Roman Emperor Theodosius II between 428 and 443 to store water supplied by the Valens Aqueduct.