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
Holy See state, not to the Holy See. The difference between the two coats of arms is that the arms of the Holy See have the gold key in bend and the silver key in bend sinister (as in the sede vacante coat of arms and in the external ornaments of the papal coats of arms of individual popes), while the reversed arrangement of the keys was chosen for the arms of the newly founded Vatican City State in 1929. Holy See The Holy See (; ; ), also called the See of Rome, is the apostolic episcopal see of the bishop