Rudkhan Castle (Ghaleh Roodkhan) near Fooman
This fortress which belongs to the Sassanid era, has been named “the Biggest Brick Fortress” of Iran, and have been nicknamed the “Castle of Thousand Steps” as you will need to take a few hundred steps to the top. Not that we want to give you a heart attack but, a moderate hiking and 935 steps is all it takes to get you to the top.