Embassy of the United States to the Holy See Embassy of the United States to the Holy See The Embassy of the United States of America to the Holy See (or Embassy Vatican for short) is the diplomatic mission of United States of America to the Holy See, a term referring to the central government and universal reach of the Roman Catholic Church. The current embassy moved to new headquarters in September 2015 in a separate building on the same compound as the United States Embassy Rome. The embassy was previously located on Aventine Hill in the Villa Domiziana in Rome, Italy, which was built as a private residence
Foreign relations of the Holy See country. Of the diplomatic missions accredited to the Holy See, 69 are situated in Rome, although those countries, if they also have an embassy to Italy, then have two embassies in the same city, since, by agreement between the Holy See and Italy, the same person cannot at the same time be accredited to both. The United Kingdom recently housed its embassy to the Holy See in the same building as its embassy to the Italian Republic, a move that led to a diplomatic protest from the Holy See. An ambassador accredited to a country other than Italy can be