After centuries of great material power, Christianity was largely reduced to its spiritual dimension, leaving only a neighborhood in the city of Rome as a memory of the Papal States.
This neighborhood has political autonomy, being recognized as the State of the Vatican, in the city with the same name, with the Pope as Head of State.
Easy to visit, it is a (big and important) detail on any visit to Rome.
Highlights in Vatican:
St. Peter’s Cathedral and the Museum, with the unmissable Sistine Chapel.
