Selasal Castle

Salasel Castle, is a historical fortress and World Heritage Site. It's part of Shushtar Historical Hydraulic System, located in the island city Shushtar, Khouzestan, Iran from the achaemenid era. Salasel Castle was registered on UNESCO's list of World Heritage Sites in 2009 and is Iran's 10th cultural heritage site to be registered on the United Nations' list together with the 12 other historical bridges, dams, canals, and buildings as Shushtar Historical Hydraulic System. The castle is situated on the top of a mountain and features multiple levels, secret tunnels, and various defensive structures, including walls and towers.