Welcome to the Serefiye Cistern, also known as the Cistern of Theodosius. This place played a crucial role due to the scarcity of the city's water resources, high population density, and frequent sieges. Cisterns, which served as storage structures for water, hold significant historical importance to this day. This audio guide is brought to you by Istanbul Tourist Pass® where you can access over 100 amazing attractions and services to fully experience the city's richness. Get yourself prepared to learn more about the history of the Serefiye Cistern.