The Naryn Castle or Narin Castle is a mud-brick fort or castle in the town of Meybod, Iran. Structures like these constituted the government stronghold in some of the older towns of central Iran. Some of these castles incorporate mud bricks of the Medes period and of the Achaemenid and Sassanid dynasties.
The ruins of the structure stands 40 meters high from its base. Although built some 2,000 years ago, it contains what seems to be a type of plumbing system which was built into its massive walls. It is also peculiarly similar in design to Ali Qapu palace of Isfahan; it has a terrace high on top of the structure whose circulation is provided by two helical stairwells. The structure also has a large underground chamber, possibly a prison. Four towers surround the entire compound, and a large gate furnishes access to a large courtyard. The structure seems to have been the victim of numerous earthquakes throughout the ages.
Wikipedia https://en.wikipedia.org/wiki/Naryn_Castle,_Meybod
Address Iran
Coordinates 32°13'34.759" N 54°0'51.705" E