Rudkhan Castle

Rudkhan Castle, also Roodkhan Castle, is a brick and stone medieval fortress in Iran that was built to defend against the Arab invaders during the Muslim conquest of Persia. With the fall of the Sasanian Empire, this area became a defensive position against the Arabs in the then-newly established Tabarestan.
  • Length: 1,550 metres
  • Built: Sasanian era
  • Materials: Brick and stone
  • Type: Fortress
Data from: en.wikipedia.org