The Holy See[7][8] (Latin: Sancta Sedes, lit. 'Holy Chair[9]', Ecclesiastical Latin: [ˈsaŋkta ˈsedes]; Italian: Santa Sede [ˈsanta ˈsɛːde]), also called the See of Rome, Petrine See or Apostolic See,[10] is the central governing body of the Catholic Church and the Vatican City State.[11] It encompasses the office of the pope as the bishop of the Apostolic episcopal see of Rome and serves as the spiritual and administrative authority of the worldwide Catholic Church and the city-state.[12] Under international law, the Holy See holds the status of a sovereign juridical entity.[13]
According to Catholic tradition and historical records, it was founded in the first century by Saints Peter and Paul, and by virtue of the doctrines of Petrine and papal primacy, it is the focal point of full communion for Catholic Christians around the world.[14] The Holy See is headquartered in, operates from, and exercises "exclusive dominion" over the independent Vatican City State enclave in Rome, of which the Pope is sovereign.[15]
The Holy See is administered by the Roman Curia (Latin for "Roman Court"), which is the central government of the Catholic Church.[16][17] The Roman Curia includes various dicasteries, comparable to ministries and executive departments, with the Cardinal Secretary of State as its chief administrator. Papal elections are carried out by part of the College of Cardinals.
Although the Holy See is often metonymically referred to as the "Vatican", the Vatican City State was distinctively established with the Lateran Treaty of 1929, between the Holy See and Italy, to ensure the temporal, diplomatic, and spiritual independence of the papacy.[18] As such, papal nuncios, who are papal diplomats to states and international organizations, are recognized as representing the Holy See and not the Vatican City State, as prescribed in the Canon law of the Catholic Church. The Holy See is thus viewed as the central government of the Catholic Church and Vatican City.[17] The Catholic Church, in turn, is the largest non-government provider of education and health care in the world.[19]
The Holy See maintains bilateral diplomatic relations with 183 sovereign states, signs concordats and treaties, and performs multilateral diplomacy with multiple intergovernmental organizations, including the United Nations and its agencies, the Council of Europe, the European Communities, the Organization for Security and Co-operation in Europe, and the Organization of American States.[20][21][22]
The word "see" comes from the Latin word sedes, meaning 'seat', which refers to the episcopal throne (cathedra). The term "Apostolic See" can refer to any see founded by one of the Twelve Apostles, but, when used with the definite article, it is used in the Catholic Church to refer specifically to the see of the Bishop of Rome, whom that Church sees as the successor of Saint Peter.[23] While St. Peter's Basilica in Vatican City is perhaps the church most associated with the papacy, the actual cathedral of the Holy See is the Archbasilica of Saint John Lateran in the city of Rome.[note 4]
In the Roman Catholic Church, only the see of the Pope bears the right to be addressed symbolically as "holy".[24] However, there was one exception to this rule, represented by the Bishopric of Mainz. During the Holy Roman Empire, the former Archbishopric of Mainz (which was also of electoral and primatial rank) had the privilege to bear the title of "the Holy See of Mainz" (Latin: Sancta Sedes Moguntina).[25]
According to Catholic tradition, the apostolic see of Diocese of Rome was established in the 1st century by Saint Peter and Saint Paul. The legal status of the Catholic Church and its property was recognised by the Edict of Milan in 313 by Roman emperor Constantine the Great, and it became the state church of the Roman Empire by the Edict of Thessalonica in 380 by Emperor Theodosius I.
After the fall of the Western Roman Empire in 476, the temporal legal jurisdisction of the papal primacy was further recognised as promulgated in Canon law. The Holy See was granted territory in Duchy of Rome by the Donation of Sutri in 728 of King Liutprand of the Lombards, and sovereignty by the Donation of Pepin in 756 by King Pepin of the Franks.
The Papal States thus held extensive territory and armed forces in 756–1870. Pope Leo III crowned Charlemagne as Roman Emperor by translatio imperii in 800. The Pope's temporal power peaked around the time of the papal coronations of the emperors of the Holy Roman Empire from 858, and the Dictatus papae in 1075, which conversely also described Papal deposing power. Several modern states still trace their own sovereignty to recognition in medieval papal bulls.
The sovereignty of the Holy See was retained despite multiple sacks of Rome during the Early Middle Ages. Yet, relations with the Kingdom of Italy and the Holy Roman Empire were at times strained, reaching from the Diploma Ottonianum and Libellus de imperatoria potestate in urbe Roma regarding the "Patrimony of Saint Peter" in the 10th century, to the Investiture Controversy in 1076–1122, and settled again by the Concordat of Worms in 1122. The exiled Avignon Papacy during 1309–1376 also put a strain on the papacy, which however finally returned to Rome. Pope Innocent X was critical of the Peace of Westphalia in 1648 as it weakened the authority of the Holy See throughout much of Europe. Following the French Revolution, the Papal States were briefly occupied as the "Roman Republic" from 1798 to 1799 as a sister republic of the First French Empire under Napoleon, before their territory was reestablished.
Notwithstanding, the Holy See was represented in and identified as a "permanent subject of general customary international law vis-à-vis all states" in the Congress of Vienna (1814–1815).[26] The Papal States were recognised under the rule of the Papacy and largely restored to their former extent. Despite the Capture of Rome in 1870 by the Kingdom of Italy and the Roman Question during the Savoyard era (which made the Pope a "prisoner in the Vatican" from 1870 to 1929), its international legal subject was "constituted by the ongoing reciprocity of diplomatic relationships" that not only were maintained but multiplied.
The Lateran Treaty on 11 February 1929 between the Holy See and Italy recognised Vatican City as an independent city-state, along with extraterritorial properties around the region. Since then, Vatican City is distinct from yet under "full ownership, exclusive dominion, and sovereign authority and jurisdiction" of the Holy See (Latin: Sancta Sedes).[note 5][27]