People from Italy are called Italians. Even if an Italian were to leave Italy, it is possible that their descendants could also claim Italian citizenship due to Italian nationality law relying mostly on "ius sanguinis" or "right of blood" in Latin. Nearly all the Italians are Christians, and most of these are Roman Catholics, which is based in the Vatican City and home to its leader, the Pope. Leonardo da Vinci is a famous artist, he is the creator of the Mona Lisa which is now in the louvre Paris.