Archbasilica of Saint John Lateran

The Archbasilica of Saint John Lateran (officially the Major Papal, Patriarchal and Roman Archbasilica, Metropolitan and Primatial Cathedral of the Most Holy Savior and Saints John the Baptist and the Evangelist in Lateran, Mother and Head of All Churches in Rome and in the World), commonly known as the Lateran Basilica or Saint John Lateran, is the Catholic cathedral of the Diocese of Rome in the city of Rome, Italy. It serves as the seat of the bishop of Rome and head of the worldwide Catholic Church: the pope. The only "archbasilica" in the world, it lies outside of Vatican City proper, which is located approximately four kilometres (2+1⁄2 miles) northwest. Nevertheless, as properties of the Holy See, the archbasilica and its adjoining edifices enjoy an extraterritorial status from Italy, pursuant to the terms of the Lateran Treaty of 1929. Dedicated to Christ the Saviour, in honor of John the Baptist and John the Evangelist, the place name – Laterano (Lateran) – comes from an ancient Roman family (gens), whose palace (domus) grounds occupied the site. The adjacent Lateran Palace was the primary residence of the pope until the Middle Ages. The church is the oldest of the four major papal basilicas, and it is one of the Seven Pilgrim Churches of Rome. Founded in 324, it is the oldest public church in the city of Rome, and the oldest basilica in the Western world. It houses the cathedra of the Roman bishop, and it has the title of ecumenical mother church of the Catholic faithful. The building deteriorated during the Middle Ages and was badly damaged by two fires in the 14th century. It was rebuilt in the late 16th century during the reign of Pope Sixtus V. The new structure's interior was renovated in the late 17th century, and its façade was completed in 1735 under Pope Clement XII. The current Rector is Cardinal Archpriest Baldassare Reina, Vicar General for the Diocese of Rome since 6 October 2024. The president of the French Republic, currently Emmanuel Macron, is ex officio the "First and Only Honorary Canon" of the archbasilica, a title that the heads of state of France have possessed since King Henry IV. The large Latin inscription on the façade reads: Clemens XII Pont Max Anno V Christo Salvatori In Hon SS Ioan Bapt et Evang. This abbreviated inscription translates as: "The Supreme Pontiff Clement XII, in the fifth year [of his Pontificate, dedicated this building] to Christ the Saviour, in honor of Saints John the Baptist and [John] the Evangelist". Because Christ the Saviour is its primary dedication, its titular feast day is 6 August, the Transfiguration of Christ.

The archbasilica's Latin name is Archibasilica Sanctissimi Salvatoris ac Sancti Ioannis Baptistae et Ioannis Evangelistae ad Lateranum, which in English is the Archbasilica of the Most Holy Savior and Saints John the Baptist and John the Evangelist at the Lateran, and in Italian Arcibasilica [Papale] del Santissimo Salvatore e Santi Giovanni Battista ed Evangelista in Laterano.

The archbasilica stands over the remains of the Castra Nova equitum singularium, the "New Fort of the Roman imperial cavalry bodyguards". The fort was established by Septimius Severus in AD 193. Following the victory of Emperor Constantine the Great over Maxentius (for whom the Equites singulares augusti, the emperor's mounted bodyguards, had fought) at the Battle of the Milvian Bridge, the guard was abolished and the fort demolished. Substantial remains of the fort lie directly beneath the nave. The remainder of the site was occupied during the early Roman Empire by the palace of the gens Laterani. Sextius Lateranus was the first plebeian to attain the rank of consul, and the Laterani served as administrators for several emperors. One of the Laterani, Consul-designate Plautius Lat

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