The biggest cistern of Istanbul. It was built during the rulership of Justinanus the 1st. (527-565) in order to provide water to the palaces.
The cistern entrance is in the little building to the west of Hagia Sophia. The cistern is 140 m long, and 70 m wide The total number of the columns is 336 , each is 9 meter height. Their dimension is 170 x 70 meters .Two Heads of Medusa, which are used as the bases of two columns, are in the north western corner of the cistern. 98 columns have the style of Corint.
Alemdar Mh., Yerebatan Cd. 1/3, 34410 Fatih, Istanbul
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