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

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