ulugbek, tillya-kori and sherdor madrasahs in registan with minarets decorated with majolica and mosaics of the xv century

minaret madrasah ulugbek tillyakori sherdor registan samarkand mosque muslim dome uzbekistan wall building art pattern majolica mosaic historical ancient architecture landmark traditional tourism cloud sky rain morning tillya-kori madrasahs minarets decorated mosaics century