Yazd was a major city and Zoroastrian religious center in Sassanid times and the castle was used as a safebox in the case of invasion, in which the residents could store valuables such as gold and jewels as well as other items such as food or grain.

[1] In the ancient world, invasion or raiding parties would look for valuable loot, while also pillaging for food for sustenance - therefore it was of importance to keep such commodities out of enemy reach.

[2] The fortress was constructed during the Sassanid era, sometime between the 3rd and 7th centuries AD and is made of adobe.

In modern times the castle has become a tourist attraction and is located near two caravansaries.

[4] Saryazd Castle was registered in national index by the Iranian Cultural Heritage Organization with number 1084 in 1975.