rome's central roman forum is flanked by the ruins of numerous significant ancient administrative structures.

landmark building town ruins palace architecture estate castle monastery history tourism fortification city waterway rome's central roman forum flanked numerous ancient administrative structures temple venus rome empire italy roma aeterna emperor hadrian domed rotunda marketplace colosseum europe facade old travel arch monument wall beautiful built destination freestanding iconic largest restore structure symbol tourist magnum romanum sacra statues goddess velian hill antoninus pius historic italian church sky columns sides italy