According to The Iran Project,Shooshtar (also written as Shushtar) historical hydraulic system is a historical site which includes dams, canals, basins and mills. The historical site annually hosts the passengers and tourists during the Nowruz holidays. Khuzestan Province, southwest Iran.Shushtar Historical Hydraulic System became Iran's 10th cultural heritage site to be registered on UNESCO's list of World Heritage Sites in 2009.