The Basilica Cistern - Yerabatan Sarnici

The Basilica Cistern - Yerabatan Sarnici

The Basilica Cistern, situated just west of Hagia Sophia Square in Istanbul, was built under the rule of Emperor Justinian I (527–565) to ensure a reliable water supply for the imperial palaces nearby. Measuring approximately 140 meters in length and 70 meters in width, the structure contains a total of 336 marble columns, organized into 12 parallel rows with 28 columns per row. The column capitals feature diverse styles, including both simple designs and elaborate Corinthian forms. The water level within the cistern fluctuated with the seasons, and multiple pipe systems were installed on the eastern wall at varying heights to manage the water flow.

The Basilica Cistern - Yerabatan Sarnici

Initially functioning as a basilica, the structure earned the name Basilica Cistern. It stands as one of the largest and most remarkable enclosed cisterns in Istanbul. The brick-constructed ceiling features cross vaults, and together with the rows of columns, it creates a forest-like ambiance. Throughout history, it supplied water to various Byzantine palaces and even a mosque until the 17th century.

During a major renovation in 1987, about a meter of sediment was cleared, uncovering the original brick floor and revealing two remarkable Medusa head sculptures. Today, guests can explore the cistern through a modern walkway installed for safe and easy access.

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