samarkand ulugh beg observatory 03

ali arc architecture asia asian astronomer attraction beg bek blue central culture entrance gate grandson ilkhanic islam islamic ivan iwan khashi landmark lower madrasa madrasah main maragheh meridian observatory ornament qushji samarkand samarqand scientist section sight sightseeing tables temur tiles timur timurid trench ulug ulugbek ulugh uzbek uzbekistan uzbekistani viewpoint