One of the magnificent ancient buildings of İstanbul is the Basilica Cistern located in the southwest of Hagia Sofia. As there used to be a basilica in the place of the cistern, it is also called Basilica Cistern. It is still used for concerts, art galleries etc.

One of the magnificent ancient buildings of İstanbul is the Basilica Cistern located in the southwest of Hagia Sofia. As there used to be a basilica in the place of the cistern, it is also called Basilica Cistern. It is still used for concerts, art galleries etc.