This reputed and historical castle is located on a stony hillock in the midst of the city of Khoram Abad. Falakolaflak Citadel (Falak ol Aflaak or Shapur Khast Castle) is amongst the most important structures built during the Sassanid era. It has been known by a number of names since it was built over 1800 years ago.It was formerly known as 'Shahpour ...