the ruins of trajan's market (mercati di traiano) with torre delle milizie - rome, italy

landmark town palace tourism building fortification castle ruins city monastery waterway plaza trajan 39aph39 market mercati traiano torre delle milizie rome italy aerial altare della patria ancient archeology arches architecture brick church cityscape civilization columns culture day empire europe famous heritage high historic history italia italian old roma roman shopping stones structure summer tourist tower travel trees unesco view vittorio emanuele overlooking multilevel red walls arched openings medieval militia background blend renaissance baroque layered