Embassy of the United States to the Holy See to the Holy See, previously located on Aventine Hill, moved to new headquarters in September 2015 in a separate building on the same compound as the United States Embassy Rome. 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
Special Administration of the Holy See Special Administration of the Holy See The Special Administration of the Holy See (, abbreviated ASSS) was a dicastery of the Roman Curia from 1929 to 1967. It was established by Pope Pius XI on 7 June 1929 to manage the ₤it. 750 million in cash and 1,000 million in Italian government bonds transferred to the Holy See in implementation of the Financial Convention attached to the Lateran Treaty of 1929. In 1967, Pope Paul VI combined the Special Administration of the Holy See and the Administration of the Property of the Holy See into one office, the Administration of