Take a step back through the mists of time with a visit to Tabularium. If you're lucky, you may be able to organize a tour of this historic building.
You're spoiled for sightseeing choice when spending time in Rome City Centre. Tabularium is a great place to kick off here, but there are loads of other fine places to explore. St. Peter's Basilica, Roman Forum, and Piazza Navona are near the historic landmark and and will cap off your day nicely.