Cistern of Aetius
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The Cistern of Aetius (Greek: ἡ Κινστέρνη τοῦ Ἀετίου) was an important Byzantine water reservoir in the city of Constantinople. Once one of the largest Byzantine cisterns, it is now a football stadium in Istanbul. Since 1928 it has been known as Karagümrük stadyumu, 'Karagümrük stadium'[1][2] or Vefa stadyumu, 'Vefa stadium', while in the Ottoman period it was known as the Turkish: Çukurbostan, lit. 'sunken garden'.