Oh, you must include Rome in general. Rome, the Eternal City. It has so many places including the Vatican (and all its treasures). Here are some of the places (including the major basilicas):
Holy Stairs: according to tradition the staircase leading once to the prætorium of Pilate at Jerusalem, hence sanctified by the footsteps of Our Lord during his Passion.
St. John Lateran Basilica: the cathedral church of Rome and the official ecclesiastical seat of the Bishop of Rome, the Pope, the only Archibasilica
St. Paul Outside the Walls,
St. Mary Major Basilica,
Santa Croce in Gerusalemme: The relics enshrined at Santa Croce in Gerusalemme in the Chapel of the Holy Relics are: A large fragment of the Good Thief’s cross; The bone of an index finger, said to be the finger of St. Thomas that he placed in the wounds of the Risen Christ; A single reliquary containing small pieces of: the Scourging Pillar (to which Christ was tied as he was beaten); the Holy Sepulchre (Christ’s tomb); and the crib of Jesus; Two thorns from the Crown of Thorns; Three fragments from the True Cross; One nail used in the Crucifixion; The Title of the Cross, discovered in the church in 1492. The fragment shows the word “Nazarene” written in Hebrew, Latin and Greek.
other places
the
Catacombs,
Colosseum…
Rome has so many treasures, you could almost make all ten to be in Rome alone