 Surrounded with the Zangezur Mountains from the west and Bargushat Mountains from the south, the town is situated on the shores of Vorotan River, at an average height of 1600 above sea level, only 6 km south of the main highway that connect Armenia with the Republic of Artsakh and Iran.Sisian river joins Vorotan at the southern border of the town.The Sisian mountain pass north of the town is at a height of 2345 meters, connecting the Vorotan plain at the east with the plains of Nakhichevan at the west.