Satellite map of Theodosius Cistern
The Theodosius Cistern (Greek: Κινστέρνα Θεοδοσίου, Turkish: Şerefiye Sarnıcı) is one of many ancient cisterns of Constantinople that lie beneath the city of Istanbul, Turkey.
Latitude: 41° 00' 26.10" N
Longitude: 28° 58' 21.36" E