Order of Saint Augustine

The Patristicum, officially the Augustinian Patristic Pontifical Institute (Latin: Pontificium Institutum Patristicum Augustinianum), is a pontifical institute in Rome, under the supervision of the Order of Saint Augustine. It is an incorporated institute of the Pontifical Lateran University. It is responsible for the study of patristic theology, the history and theology of the Church Fathers.

The Embassy of the Philippines to the Holy See is the diplomatic mission of the Republic of the Philippines to the Holy See, the central government of the Roman Catholic Church. Opened in 1957, it is located along Via Paolo VI in the rione of Borgo, part of Municipio I in central Rome along the border between Italy and Vatican City, and across from St. Peter's Square. It is distinct from the larger Embassy of the Philippines in Rome, the Philippines' diplomatic mission to Italy.

Santa Monica degli Agostiniani is a 20th-century Augustinian chapel and titular church in central Rome, immediately south of the Vatican, dedicated to Saint Monica.

The Church of Saints Michael and Magnus (Italian: Santi Michele e Magno, West Frisian: Friezetsjerke, Dutch: Friezenkerk) is a Roman Catholic church in Rome, Italy, dedicated to Saint Michael the Archangel and the Bishop Saint Magnus of Anagni. It lies on the northern slope of the Palazzolo hill, in Rione Borgo, near the Vatican, and is the national church dedicated to the Netherlands. It is also known as the "Church of the Frisians" (Dutch: Kerk van de Friezen). In 1989, the church was granted to the Dutch community in Rome. A 19th century source calls the church Santi Michele e Magno in Sassia, due to a location on a Vico dei Sassoni.

The Pontificio Collegio Urbano de Propaganda Fide (English: Pontifical Urban College for the Propagation of the Faith) was established in 1627 for the purpose of training missionaries to spread Catholicism around the world (the Latin term "de propaganda fide" means “for the propagation of the faith”).

Palazzolo (or Palazzola, in Latin Palatiolum) is the extreme northern offshoot of the Janiculum hill which stretches towards Vatican hill, in the Borgo rione, in Rome.

Saint Peter's Square (Latin: Forum Sancti Petri, Italian: Piazza San Pietro [ˈpjattsa sam ˈpjɛːtro],) is a large plaza located directly in front of St. Peter's Basilica in Vatican City, the papal enclave in Rome, directly west of the neighborhood (rione) of Borgo. Both the square and the basilica are named after Saint Peter, an apostle of Jesus whom Catholics consider to be the first Pope. At the centre of the square is an ancient Egyptian obelisk, erected at the current site in 1586. Gian Lorenzo Bernini designed the square almost 100 years later, including the massive Doric colonnades, four columns deep, which embrace visitors in "the maternal arms of Mother Church". A granite fountain constructed by Bernini in 1675 matches another fountain designed by Carlo Maderno in 1613.

The Church of San Lorenzo in Piscibus (English: Saint Lawrence at the Fish Market) is a 12th-century small church in the Borgo rione of Rome. It is located near Saint Peter's Square and Vatican City, but its façade is not visible from the main street, Via della Conciliazione.

The Dicastery for the Doctrine of the Faith (DDF) is the oldest among the departments of the Roman Curia. Its seat is the Palace of the Holy Office in Rome. It was founded to defend the Catholic Church from heresy and is the body responsible for promulgating and defending Roman Catholic doctrine.Formerly known as the Supreme Sacred Congregation of the Roman and Universal Inquisition (1542–1908); the Supreme Sacred Congregation of the Holy Office (1908–1965); and then until June 2022 the Congregation for the Doctrine of the Faith (CDF; Latin: Congregatio pro Doctrina Fidei). It is still informally known as the Holy Office (Latin: Sanctum Officium) in many Catholic countries.Founded by Pope Paul III in 21 July 1542, the sole objective of the dicastery is to "spread sound Catholic doctrine and defend those points of Christian tradition which seem in danger because of new and unacceptable doctrines."Its headquarters are at the Palace of the Holy Office, just outside Vatican City. The congregation employs an advisory board including cardinals, bishops, priests, lay theologians, and canon lawyers. The current Cardinal Prefect is Luis Ladaria Ferrer, who was appointed by Pope Francis for a five-year term since 1 July 2017.

The Palace of the Holy Office (Italian: Palazzo del Santo Uffizio) is a building in Rome which is an extraterritorial property of Vatican City. It houses the Holy Office of the Roman Catholic Church. The palace is situated south of Saint Peter's Basilica near the Petrine Gate to Vatican City. The building lies outside the confines of Vatican City at the south-eastern corner of the city-state. It is one of the properties of the Holy See in Italy regulated by the 1929 Lateran Treaty signed with the Kingdom of Italy. As such, it has extraterritorial status. The palace was first built after 1514 for Cardinal Lorenzo Pucci, and it was called Palazzo Pucci. Its façade was rebuilt in 1524–1525 by the architects Giuliano Leni, Pietro Roselli and even Michelangelo. When Pucci died in 1531, the building was still not fully completed.In 1566–1567, the palace was purchased by Pope Pius V for 9000 scudi, and it was converted into the seat of the Holy Office. Renovation works were undertaken by Pirro Ligorio and Giovanni Sallustio Peruzzi. A complete renovation of the building was made by Pietro Guidi between 1921 and 1925.It is where Cardinal Joseph Ratzinger formerly worked as Prefect of the Congregation.

The Archive of the Congregation for the Doctrine of the Faith (ACDF), commonly referred to as the Archive of the Inquisition (or more fully the Archive of the Inquisition and Index), contains the Catholic Church's documents dealing with doctrinal and theological issues related to church teaching. It also contains information on political trials that were carried out when the papacy had temporal power over the Papal States.

The Fountains of St. Peter's Square (Italian: Fontane di Piazza San Pietro) are two fountains in St. Peter's Square in Vatican City, created by Carlo Maderno (1612–1614) and Gian Lorenzo Bernini (1667–1677) to ornament the square in front of St. Peter's Basilica. The older fountain, by Maderno, is on the north side of the square.