Due to natural features, such as being located in the mountainous or near the fringes of the desert the rural settlements of Semnan province uphold special characteristics. Such examples can be the vicinities of Shahmirzad, Sangsar, Padeh and Goorsepid. Whereas other settlements named as, Darjezin, Forumad, Lasjerd, Ahovan and Miandasht come under the category of being ancient and historical.
Though not one of Semnan's classic caravanserai villages, Padeh's sizeable shattered citadel, dating back at least 1500 years, has been so eroded by water and weather that it seems to be an almost abstract sculpture of hill-sized proportions. You can poke around in a preserved hammam site and pudding-shaped ice house amid many ruined old structures. It's 5km off the Damghan–Garmsar Hwy, via the Aradan turning 93km west of Semnan, which is marked by a conical abambar (water cistern).
Shahmirzad has been home to people of diverse ethnic backgrounds, a large group of whom seasonally settled in cities and towns of Mazandaran, such as Babol, Sari, Neka, and Behshahr. During the past decades many Muslim, Bahaei, and Shahmirzadi Jews, migrated to larger cities in Iran and abroad, most notably San Francisco Bay Area. Shahmirzadi language (Shamerzaei), is a Caspian language close to Mazandarani and Gilaki.
Shahmirzad's walnut orchard with a size of 700 ha is noted by the UN, Food and Agriculture Organization, as the largest of its kind in the world. Shahmirzadi homeowners are given a proprietary interest in the walnut orchard in proportion to the amount of land they own in the village.