Hezekiah's Pool (Hebrew: בריכת חזקיהו, Brikhat Hizkiyahu), or the Patriarch's Pool, located in the Christian Quarter of the Old City of Jerusalem, was once a reservoir forming part of the city's ancient water system.
Flavius Josephus referred to the pool as Amygdalon, meaning 'almond tree' in Greek, but it is very likely that he derived the name phonetically from the Hebrew word מגדל migdal, meaning 'tower', thus it is believed that the original name was Pool of the Tower or Towers.
At a later time it was fed from the Mamilla Pool, one of the three reservoirs constructed by Herod the Great during the first century BCE[2] by an underground conduit which still partially exists.
The bottom of the pool is cemented and leveled natural rock.
[3] As of 2010[update] the pool is dry and surrounded by buildings on all sides.