Emamzade Koh is located in Farajin village at the distance of 16 km of Hamadan, and also it is in one of the pleasant and exhilarant valleys of Alvand Mountain's foothill.
This mason belongs to the Mongol era and eighth century AD. Monument's building is in the shape of a rectangular. Its groin consists of a big balcony on the top of the tomb and two- floor rooms in both side of the balcony.
This monument is the remembrance of two innocent Imams. Central building consists of two connected shrines with two domes.