El Gölü, also known as Shah Gölü is the name of a large historic park containing an artificial lake in south east of Tabriz. In the middle of lake, a building representing the traditional architecture of Tabriz is located. It seems that the lake was originally was used as a water resource for agricultural purposes. During Qajar dynasty when Tabriz used to be the residence of crown prince of Iran, there was an artificial island with a small palace in the middle of the lake which was used as royal summer palace for the royal family.