Mr P.
Google
Worth the effort to get to and free to walk into. It’s a fair walk from centre of Rome but the walk takes you past the Circus Maximus and onto the Appian Way.
The church takes its name from the oral tradition according to which the apostle Peter, fleeing from the city to avoid martyrdom, meets Jesus to whom he addresses the following words “Domine quo vadis (Lord, where are you going)?” And the Lord replied “Venio Romam iterum crucifigi (I am coming to Rome to be crucified again)”. Peter, aware of the rebuke, turns back to face his destiny and Jesus disappears but, in disappearing, he leaves the impressions of his footprints on the road.
As evidence of the incident, within the Church there is a stone with the imprints “of His holy feet”, left by Jesus precisely on the site where the Church now stands. The stone is actually a copy: the original is in fact preserved in the Basilica of San Sebastiano. The second name with which the church is known: Santa Maria “in Palmis” derives from this episode.