Read the inscriptions on the tombstones and try to figure out the history of the region at Salesian Institute of San Callisto. You'll discover lots of fascinating stories among the monuments here.
There's an entry fee to Salesian Institute of San Callisto. Check if you can pre-purchase your tickets online to save time, as there's loads more to explore around the commercial neighborhood of Quartiere XX Ardeatino. St. Peters Basilica, Roman Forum and Piazza Navona are close to the burial ground and also popular with travelers.