The castles of Bandar Langeh region were generally built for the life of local rulers. Kalat Castle was also built for the life of Sheikh Suleiman al-Hammadi.
Blue Mosque according to the inscription on its entrance; It was built in 870 AH, during the reign of Sultan Jahanshah, the most powerful ruler of the Qara Quyunluyan dynasty.
One of the most important attractions of this tourist area is its water springs, which, after merging, create a large river, which has become a factor for the creation of large gardens downstream of this promenade.
One of the important caravanserais located in Semnan province and south of Garmsar is "Ain al-Rashid" which is located a short distance from Ghasr-e Bahram caravansary.