Catacomb of Calepodius
Rome, Italy
The Catacomb of Calepodius (also called the Cemetery of Calepodius) is one of the Catacombs of Rome, notable for containing the tombs of Pope Callixtus I (ironically, the creator of the Catacomb of Callixtus, which once contained the tombs of a dozen other popes) and Pope Julius I, along with the eponymous Calepodius.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).