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.
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.
The buildings of this complex are one of the most beautiful Islamic historical monuments in Iran in the Safavid era and is one of the most important ancient monuments in the country.
Entering the castle requires a half-hour walk and you have to climb the mountain. Parts of the route are a bit difficult and not suitable for children and the elderly.