I don't know much about the markets except that I walked by them every day, they appear to be very well preserved and they once were the markets of ancient Rome.
The monument of Vittorio Emanuelle.
Take a look at the guards waking over the eternal flame.
The Trajan Column stands 39.8 metres tall, commemorating the Trajan's victory over the Dacians. It is an incredible sculptural masterpiece- it depicts 100 scenes with 2 500 figures in relief.