the arch of constantine, rome

312 ancient angle arch archeology architecture archway attraction battle bridge building capital carving city cityscape civilization color colosseum commemorate commissioned constantine constantines day dedicated destinations doorway emperor europe european evening fence great hill historic historical horizontal image italian italy landmark leaders maxentius military milvian night old outdoor outdoors palatine photography pillar procession roman rome route senate situated spans stone sunny tourist travel triumphal triumphalis urban via victorious victory view