Rome is not just one large art appreciation class. There's fun to be had in all areas, so take off your heels and put on your sneakers for a walk on Via Appia Antica, Rome's oldest road lined with beautiful villas and tombs, and a gorgeous national park. Rent bicycles or walk. If you think the city revolves around the Roman Forum, then make sure to go the Monument of Victor Emmanuel, and head to the rooftop for a bird's eye view of the Ancient City and the contemporary metropolis. For something a little more calm, head to Villa Borghese, where there are tonnes of things to do for children of all ages. At noon, head to the Gianicolo for some loud cannon fire. And then make your way to the "keyhole" at the Knights of Malta. For a little more quiet, head underground to Rome's catacombs or even below a church. When all else fails, go to Giolitti's, a gelateria with nearly 100 flavors.
piazza dei Cavalieri di Malta
via Garibaldi and Passeggiata del Gianicolo
Via degli Uffici del Vicario, 40
Via Labicana 95
Via San Giovanni in Laterano at Piazza San Clemente