Gabri Mill belongs to Sasanid Era and it is located in Poshteh Hossein Abad neighborhood, Khorram Abad. This mill has a cuboid structure that is constructed using axed stones, rubble and mortar. It is worth mentioning that this mill has been used by people until Qajar Era. Gabri Mill has probably been used by the public in the ancient city of Shapoor Khast. Gabri Mill has been registered as a national monument of Iran.