Struthion Pool
Jerusalem, Israel
The Struthion Pool, effectually translated from the Greek as 'Sparrow Pool' (Jewish Palestinian Aramaic) is a large cuboid cistern beneath the Convent of the Sisters of Zion in the Old City of Jerusalem, built by Herod the Great in the first century BCE.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).