(Latin, "Lord, where are you going?"). According to a legend found in the Acts of St. Peter, Peter was fleeing persecution in Rome when he met Christ on the Appian Way and asked him this question. Christ replied, "I am coming to be crucified again. " Peter took this to mean that Christ would suffer again in him, so Peter turned back to Rome, where he was crucified. The small church of Santa Maria delle Piante on the Appian Way, commonly called Domine Quo Vadis, commemorates this event.