ancient attraction city europe forum Italy landmark panorama pillars roman rome ruins tourist touristic architecture b.c. cesar civilization colosseum gladiators history marble pilars ruin senate stonework world history column excavation heat light pillar Remains shadow silhouette sky summer sun vertical chapel church Francesco Borromini Roman baroque Saint Ivo Sant'Ivo alla Sapienza spiral spire steeple art classic culture emotions faces gods heads mask mithology miths mouth sculptures theatre basilica building cathedral christian dome historic papal pilgrimage pope religion St. Peter's Basilica tourists vatican artifact Augustus Caesar classical sculpture germany gold golden imperator jaw metal Octavianus Octavius portrait sculpture statue Trier visual arts