On the second day, you’ll be heading south. Starting from Piazza Venezia, you can see the Altare della Pietra and visit the Capitoline museums, which preserve the memories of Ancient Rome. There you can see the statue of Romolus and Remus, the legendary founders of Rome, being breast-fed by La Lupa, i.e. the she-wolf who sheltered the twins. Then take a stroll through the Roman Forum where you’ll be encompassed by the ancient ruins and truly feel the spirit of Rome.
From there, visit the Mouth of Truth and Circus Maximus. The Colosseum is right around the corner so make sure to snap a few pictures by the scenic area where the Colosseum metro stop takes you. You are now in the heart of Monti, a cozy neighborhood abundant with thrift stores and cafes. Stop for lunch or a drink, whatever your heart desires. Take the afternoon to walk around and finish seeing anything you initially thought was too crowded. Reach the Testaccio neighborhood and go view St. Peter’s through a keyhole.