St. Peter
Basilica of St Sebastian Outside the Walls
One of the seven pilgrim churches of Rome, the current church was built in 1714. The catacombs of St. Sebastian are nearby. St. Sebastian is below one of the side altars. One of the arrows that struck him and the column he was tied to are also here. Christ's footprints from when he met St. Peter on the Via Appia (Quo Vadis, Domine?) are here, as is a bust of Christ, which was Bernini's last sculpture.
St. Peter's Basilica
Possibly the most famous church in the world, and one of the four papal basilicas, the current building was built between 1506 and 1626, replacing the original from the time of Constantine in the 4th century. St. Peter's tomb lies beneath the high altar of the basilica, and the church continues to be a place of interment for popes, cardinals and bishops.