Vatican: A UNESCO state
https://www.uslanguageservices.com/blog/13-fun-facts-about-the-vatican-city/
The Vatican is a unique destination for many reasons. It is the smallest country in the world, both in territory and population, situated within the city of Rome and the only state ruled by the Pope. Its museums and cathedrals' cultural value made UNESCO designate the whole country a World Heritage Site. Annually, over four million tourists visit the Vatican Museums, to say nothing of its splendid gardens and jaw-dropping cathedrals painted by famous Renaissance artists.
Unfortunately, a large number of tourists means long queues, crowded attraction sites, and a high crime rate. In spite of this, the Vatican is a must-see not only for devout Catholics but for all the art admirers. The main attractions found in the Vatican City are an architectural masterpiece of St. Peter Basilica; the imposing Apostolic Palace (the Pope's residence); the amazing Sistine Chapel with frescoes created by Perugino, Ghirlandaio, Botticelli, and Michelangelo; the extensive Vatican Apostolic Library; and the Vatican Museums with a variety of sculptures and paintings.
The entrance to the Vatican City is free; only museums charge fees. Tickets can be bought via the Internet and paid with a credit card; this way, you can avoid a part of queues. Mind the clothing when visiting the Vatican: it should be modest, not exposing too much skin. If you want to stay in the Vatican, don't search for Vatican hotels: there aren't any. The only people allowed to reside inside are the clergy and the Swiss Guards, the city's defenders. However, as long as the Vatican is situated in the heart of the tremendous city of Rome, you can always find a place to stay next to the home of the Holy See.