Baucis and Philemon

In Ovid's moralizing fables collected as Metamorphoses is his telling of the story of Baucis and Philemon, which stands on the periphery of Greek mythology and Roman mythology. Baucis and Philemon were an old married couple in the region of Tyana, which Ovid places in Phrygia, and the only ones in their town to welcome disguised gods Zeus and Hermes (in Roman mythology, Jupiter and Mercury respectively), thus embodying the pious exercise of hospitality, the ritualized guest-friendship termed xenia, or theoxenia when a god was involved.