قــنات قــصبه گــناباد

 One of the valuable buildings of Kharazmshahiams period in Khorasan Province is Gonabad great mosque which is located in the eastern part of this town. The great mosque has two porticos with ornamental portals, courtyard, northern and southern porticos, porch and 3 columned Shabestan (part of a mosque designed for sleeping or nocturnal prayers).