The Basilica Cistern also known as the Yerebatan Sarayı or ‘Sunken Palace’, is an ancient underground water reservoir in Istanbul, Turkey. The cistern was designed to store water for the Great Palace of Constantinople and surrounding buildings, ensuring a reliable water supply for the city during drought or siege. With nearly 1,500 years of history and witnessing the rise and fall of the Roman, Byzantine, Latin, and Ottoman empires, the Basilica Cistern holds immense historical significance. The