Basilica Cistern

The Basilica Cistern, known locally as Yerebatan Sarnıcı, represents one of Istanbul's most atmospheric and mysterious attractions. Built in the 6th century during the reign of Byzantine
Emperor Justinian I, this underground marvel was designed to store water for the Great Palace and surrounding buildings. The cistern spans approximately 9,800 square meters and can hold up to 80,000 cubic meters of water, making it the largest surviving Byzantine cistern in Istanbul.

The cistern's most striking features are its 336 marble columns, each standing nine meters high and arranged in 12 rows of 28 columns. These columns, many of which were salvaged from earlier structures, showcase various architectural styles and capitals. The most famous columns are those resting on Medusa head bases, whose mysterious positioning has sparked numerous legends and theories.

The cistern's dimly lit interior, with walkways suspended above the water and soft lighting reflecting off the columns, creates an almost mystical atmosphere. Visitors can explore the cistern via wooden walkways while listening to classical music that enhances the otherworldly experience. The temperature inside remains constant year-round, providing a cool refuge during hot summer months.