The Vatican is not a "who" it is a "what." The Vatican is an independent city-state surrounded by the city of Rome, Italy. It is the headquarters of the Catholic religion.
As headquarters of the Roman Catholic Church, religion is integral to life within Vatican City.
Buddhist
There is only one religion practiced in Vatican City, home to the Pope, and that is Catholicism.
Vatican City
vatican city
VC, in the context of Catholic religion, commonly stands for "Virgin Mary" or "Vox Christi" (Voice of Christ).
The Vatican City, inside Rome, Italy. The Vatican is its own country.
The headquarters is located in Vatican City.
Vatican City is not really a "city" as people think of a city. It is the smallest state in the world and is the headquarters of the Catholic Church. The Pope lives there along with 472 people who represent the Holy See. It is 108.6 acres located in the city of Rome. The name comes from the Vatican Hill that dates back to the 5th century BC. It exists to guarantee the independence of a universal organization of the Catholic church.
Ancestors of the Roman Empire live in Italy. Their Religion is Roman-Catholic. Vatican City, the main city of the Catholic Religion, is in Italy.
The Vatican in Rome is the heart of the catholic religion, that's why Rome is sometimes calles the Vatican City. The Pope lives in the vatican, who is you could say the 'head priest'.