Many Japanese Shinto shrines are built on or near springs (many of these shrines were subsequently absorbed by the Buddhist tradition in much the same way as pagan sites in Britain were absorbed by the Christian tradition). I lived for many years in the grounds of a Buddhist temple known as Sennu-ji (Spring Temple); within the temple grounds there are two very ancient springs one of which is frequented by pregnant women to ensure the safe delivery of a healthy child - my wife used to go there nearly every day while she was pregnant with our two children.