to the Middle PersianŠahrestānīhā
ī Ērānšahr) by his grandson Hormizd
I; the town's name either combined
Ardashir's name with the Zoroastrian name for God,Ōhrmazdor Hormizd's name with that of his grandfather. It became
the seat of the province, and was also referred to asHūmšēr. During the
Sassanid era, an irrigation system and several dams were constructed, and the
city prospered. Examples of Sassanid-era dams areBand-e Bala-rud
