Shushtar Historical Hydraulic System
One of the most spectacular ancient structures of Iran locates in Khuzestan province which has raised admiration of all people all over the world and could register its name in UNESCO world heritage list. “Shushtar historical hydraulic system” is a collection of bridges, weirs, water mills, water falls, canals, and great underground tunnels for conducting water which are connected to each other and work systematically.
This gigantic structure has been constructed in Achaemenid era to Sasanid era so people could benefit from having fresh water. There is a dam called “Gar Gar” which blocks the river and causes the level of water goes up in order to water three tunnels. After passing the tunnel, water enters to multiple canals and after turning the wheels of mills pours into a pond-like area in the form of a water fall.