chor minor, also known as madrasah of khalif niyaz-kul, bukhara, uzbekistan. unesco world heritage

chor minor bukhara uzbekistan islam minaret ancient old niyazkul four niyaz khalif madrasah uzbek road silk oriental chorminor central asia ornament architecture travel culture blue building tourism mosque religion landmark islamic monument city historic tower attraction heritage sky tourist unesco buxoro niyaz-kul world uzbekistan heritage