m long and 9 m wide with 8 pillars. There is an adytum in its southern wall which is 180 cm high. At the lower part there is an inscription with plaster work and adorned with floral design and sacred verses. This mausoleum is one of the important places of pilgrimage in Darreh Shahr. Baba Seifedin Mausoleum in located in the north east of Darreh Shahr in the outskirts of a hill known as Chahar Taq. There are two tombs in the mausoleum without any description on the tombstones. There is a small inscription on the top of the entrance door which indicates the date of its repair. The materials of the building are stone, gypsum and brick. There are several trees around the mausoleum which are hundreds of years old. Tikhan (Tiqan) is located among the agricultural lands in Jamshid Abad village north east of Darreh Shahr. In excavations carried out in its location, 4 levels have been appeared. The earthenware objects obtained in the first floor are simple. Moreover, some flint blades and carved stones have been discovered there as well. Koozeh Garan Hill is about 5.5 kilometers from Tikhan Hill, and is larger and older than it. Its antiquity dates back to the late 3rd millennium BC., but its first floor relates to the Sassanide period. Some colored and engraved earthenware objects have been discovered in the basement of the building. Certain parts of lower floors had been allocated as a graveyard. The upper graves belong to the Zoroastrian period. It is said that this place was a pottery making vicinity so to speak. Cham Namesht Bridge is an 18-arch bridge constructed on the Seymareh river 4 kilometers north of Darreh Shahr facing the Chamkalan village. The antiquity of this bridge dates back to the Sassanide period, but it was used till later centuries. The bridge is directly connected to the remains of the Sassanide monuments in Darreh Shahr. Bahram-e Choobin Gorge, a narrow and high valley, is one of the most important and strategic points of the region, located in the western side of the Darreh Shahr - Pol Dokhtar road. This gorge, which is also called the Bahram Hunting Ground, contains several historical monuments in its entrance and on the hard rocks like the ruins of a Sassanide castle which is built of stone and gypsum with stone stairs and four connected water reservoirs (Ab