Qara Kelisa has a special feature of Armenian architecture and is one of the most valuable historical monuments in the country in terms of volume and technique.
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 architecture of Oramanat is completely adapted to the mountains, and the houses in the villages of the region are built in a stepped manner due to the steep slope of the rocky slopes.
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 2500-meter building of Baghcheh Jogh Palace is built in the middle of a garden with an area of 11 hectares and is one of the masterpieces left from the late Qajar period.