rotunda mausoleum of galerius, landmark and historic monument from 4th century, now orthodox church of agios georgios in the city

rotunda galerius thessaloniki greece mausoleum historic landmark monument city center architecture 4th century byzantine building exterior greek roman church agios georgios orthodox minaret history stone old ancient tourism travel destination attraction sightseeing famous antique archeology heritage town age hellenic macedonia copy space sunny blue sky nobody from now