Siloam (Hebrew: Shiloah; Arabic: Silwan) is an ancient site in Jerusalem, located in the East Jerusalem neighborhood of Silwan, south of the Old City. According to the Hebrew Bible, Siloam was built around the "serpent-stone", Zoheleth, where Adonijah gave his feast in the time of Solomon. It is the site of the Pool of Siloam and the Tower of Siloam, both mentioned in the New Testament.
https://en.wikipedia.org/wiki/Siloam