We start at the Basilica of St. Mary Major, home to a relic from the manger and the tomb of the late Pope Francis. Then, we visit the Scala Sancta, the sacred stairs Christ climbed, followed by the Basilicas of St. John Lateran and St. Paul Outside the Walls, which contains a relic of St. Paul the Apostle. We’ll also stop at the Church of Domine Quo Vadis, where tradition says Christ appeared to Peter. Dinner on your own. (B)