The tomb of the Roman Emperor Hadrian, in Rome.

Hadrian's Tomb

The tomb of the Roman Emperor Hadrian, in Rome.

Lateran Palace in Rome where Roman bishops would stay in the time of Constantine.

Lateran Palace

Lateran Palace in Rome where Roman bishops would stay in the time of Constantine.

The ancient basilica of St. Peter in Rome.

St. Peter's Basilica

The ancient basilica of St. Peter in Rome.