Holy See
Although the Holy See is sometimes metonymically referred to as the "Vatican", the Vatican City State was distinctively established with the Lateran Treaty (1929) between the Holy See and Italy to ensure the temporal, diplomatic, and spiritual independence of the Papacy. As such, ambassadors are officially accredited to the Holy See and not the Vatican City State. Conversely, Papal nuncios to states and international organisations are recognised as representing the Holy See and the integrity of the Catholic Church along with its 1.3 billion members, not the Vatican City State, as prescribed also in the Canon law of the Catholic Church (1983). The "Holy See" thus refers to the See of Rome viewed as the central government of the Catholic Church. The Catholic Church, in turn, is the largest non-government provider of education and health care in the world, while the diplomatic status of the Holy See facilitates the access of its vast international network of charities.
List of religious sites
Rome is the place from which Catholics believe the one, holy, catholic and apostolic church were formally founded and begun by St. Peter (whom they consider to be the "Prince of the Apostles") as the appointed successor and first vicar of Christ. Thus while the Holy Sepulchre is still the most sanctified of places for Catholics, the Vatican is an extremely sacred place to the faithful (those of the Latin Church, as well as the Churches "sui iuris") as the seat of their supreme authority on Earth. Important papal territories include the four major basilicas (L.: "Basilica maior", pl. "-es"; excluding St. Peter's) – namely the Archbasilica of St. John Lateran (the ecumenical Catholic mother church), St. Peter's Basilica, the Basilica of St. Paul Outside the Walls (containing the tomb of Paul the Apostle), and the Basilica di Santa Maria Maggiore.