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.
Pontifical Anthem
On October 16, 1949, Pope Pius XII declared it the papal anthem, replacing Viktorin Hallmayer's "Marcia trionfale" (1857), which, being still the papal anthem when the Vatican City State was founded in 1929, had been treated also as the new state's anthem. Gounod's "Marche Pontificale" was first performed in this new role during a ceremony on Christmas Eve of 1949, one day before the opening of the Holy Year 1950. The old state anthem too was played for a last time, almost as a token of respect.