Vatican City is the smallest country in the world. Not everyone knows, however, that it also includes, on the principle of extraterritoriality, archbasilica of St. John Lateran, basilica of St. Paul Outside the Walls, Santa Maria Maggiore and the residence in Castel Gandolfo. When planning the trip, I assumed in advance that I would not visit the Vatican Museums, for which tickets must be booked well in advance, but the inability to admire the Pieta and the confession of St. Peter due to conservation work was a big disappointment for me.