entrance is situated towards the north, within the body of the north-western tower. From the initial day of erection the castle served a variety of purposes including political, military, governmental and social. Now, Dec. 2019, archaeology and anthropology museums are located inside the castle. Bronzes of Lorestan are among the interesting handmade objects inside the archaeology museum. This scarce monument has been inscribed on the National Heritage List under the registration number of 883. Gerdaw Bardina Gerdab Sangi or Gerdaw Bardina is a cylindrical shape monument from Sassanid dynasty (224-651 CE) located in Takhti Square. The main construction materials are lime-mortar and rocks exploited from SefidKouh mountain. Encircling several springs, the edifice sits near the prehistoric Qamari Cave. The construction was once used for rationing and distributing potable and agricultural water among local population and farmers. Its surrounding cylindrical stone wall has a height of 10 meters and a diameter of 18 meters. There are a few different-sized outlets in the wall for controlling the flow of water into a canal on the west of the structure. Originally, there were 7 of such outlets, however today only one is functional. This outlet measures 160 x 90 centimeters and opens and closes like a drawer. There are traces of another outlet where water was flowing from it and was reaching to a stream called Nahre Naseri. The flowing water after a path of approximately 12 kilometers, would eventually make its way to a valley called Baba Abbas. The main interesting thing is the way that they have conducted the water to the stream. Gerdab Sangi has been inscribed on the National Heritage List in 1976. Brick minaret Brick Minaret is a cylindrical brick tower from Seljuq and Buyid dynasties located inside the ancient city of Shapur khast, south of Khorramabad. ُThis Iranian minaret is a combination of the Indian Stupa, commemorative columns, and the central Asia tradition of tower building for defensive and communication purposes. Brick Minaret of KhorramAbad was probably used as a guidepost for caravans that pass the city, i.e. communication purpose. The current height of the minaret is 29.45 meters. Since one of the windows of the minaret is located on top of it, undoubtedly its height was higher. A cylindrical column was built inside the minaret and through 99 spiral staircases around the column one can reach to the top of the minaret. The entrance is opened