Below street level in Piazza Sant'Oronzo, the remains of the Roman Amphitheater dating back to the 1st or 2nd century AD will certainly not go unnoticed. Its discovery is relatively recent, as it dates back to the early twentieth century, when the works to build the headquarters of the Bank of Italy (obviously interrupted). The original appearance of the structure is very similar to that of the Colosseum and the Arena of Verona. Fights between gladiators took place inside the amphitheater, but also clashes between men and animals (portrayed in some scenes in relief on the marble depicting slaves against lions and bulls).