On a cliff face just outside Shiraz a Sassanid nobleman keeps watch over an ancient spring. The Sassanids ruled Iran from about 200 AD to 635 AD. This is the age of legend for Iranians and a time at which their love for water was probably formed through the cult of the Zoroastrian water spirit, Anahita. This in turn derives from the occupation of the Sasan, the founder of the dynasty who was a priest in the temple as Istakhr, dedicated to the spirit.
The traditional love of pools and fountains probably took root in the psyche of the people at this time and has remained there ever since.