Babak Fort, or Babak Castle, is a large historical citadel perched on top of a mountain in Arasbaran forests in northwestern Iran. It is believed to have been a stronghold of Babak Khorramdin, the leader of the Khurramites in Azerbaijan who fought Arabs.
The castle is one of the greatest examples of Iranian architecture. The fort built during the Sassanid dynasty is 2,300-2,700 m. above sea level. The main gate is the only way to access the fort which is impenetrable from the surrounding mountains.
Photos of the fort posted online by hamshahrionline.ir:
