the arch of constantine arco di costantino. .triumphal arch and colosseum on background. rome,

arch constantine arco di costantino triumphal colosseum background rome amphitheater amphitheatre amphitheatrum ancient anfiteatro antique architecture arena building centre city cityscape coliseum colosseo column culture emperor empire exterior famous flavian flavio flavium forum gladiator historical history italian italy landmark monument old outdoor roma roman sculpture stone tourism travel triumph