Narin Castle is the most important monument of Meybod of Yazd city. Some people believe that this old fort is considered as the beginning of the development of Yazd. 
The castle is built entirely of mud brick with an area of 3 hectares.
The building has seven floor and multiple towers on a hill dominating the Meybod city. Some compare Narin Castle as White Castle in Ferdowsi’s Shahnameh. In different periods of history it was used as governmental citadel or fortress.
The peak power of the castle is in Sassanid era and then on to the al-Muzaffar.