Theodosius Cistern

The Theodosius Cistern is a large ancient underground water reservoir located in Istanbul, Turkey. Built during the reign of Emperor Theodosius II in the 5th century, it was designed to store water for the city, ensuring a reliable supply during times of need. The cistern features a series of columns and vaults, creating a vast and impressive space. It played a crucial role in the Byzantine water supply system and is an important historical site, showcasing Roman engineering and architecture. Today, it serves as a tourist attraction, offering insight into Istanbul's rich history.