It is located in Sultanahmet.

It is a covered cistern from the Byzantine period.

It was built by Constantine I.

It was renovated in 532 AD.

Its name in Byzantine is Basilica Cistern.

Its purpose was to supply and store water for the city.

When the Ottomans conquered Istanbul, they built a small mosque.

Its name is Üskübiye.

There are two statues of Medusa's head.

It is said that Medusa turns anyone who looks into her eyes to stone.

It is used upside down.

You can make a wish by throwing a coin.

Many events are organized.