Vatican City is evidently, bigger on the inside.

VaticanCity

“Another interesting feature of the Vatican State is the number and extension of areas beyond its boundaries, in Italian territory, on which it enjoys extraterritorial rights, and therefore a very large and almost supreme authority. Italy has agreed to exempt these areas from taxes and from obedience to the law of expropriation for public utilities: papal authorities are entrusted with internal police service. As respects postal and telegraphic service they are considered to belong to the Vatican.”

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