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 Foreign relations of the Holy See The Holy See has long been recognised as a subject of international law and as an active participant in international relations. One observer has said that its interaction with the world has, in the period since World War II, been at its highest level ever. It is distinct from the city-state of the Vatican City, over which the Holy See has "full ownership, exclusive dominion, and sovereign authority and jurisdiction". The diplomatic activities of the Holy See are directed by the Secretariat of State (headed by the Cardinal Secretary of State), through the Section