Archbasilica of Saint John Lateran

The Archbasilica of Saint John Lateran (official name: Archbasilica of The Most Holy Saviour and of Saints John the Baptist and the Evangelist) is one of the most significant churches in the world. It is not only the cathedral of Rome but also the official ecclesiastical seat of the Pope as the Bishop of Rome, earning it the title of “Mother and Head of All Churches in Rome and in the World.”

Description
The basilica is the oldest of the four major papal basilicas of Rome.
Exterior: The current façade, completed by Alessandro Galilei in the 18th century, is a magnificent Baroque masterpiece. It features colossal statues of Christ the Saviour, flanked by Saint John the Baptist, Saint John the Evangelist, and the 12 Apostles, which stand atop the balustrade. The inscription on the facade clearly states its dedication to “Christo Salvatori” (Christ the Saviour).
Interior: The interior, largely the work of Francesco Borromini during the 17th century reconstruction commissioned by Pope Innocent X for the Jubilee of 1650, features a blend of architectural styles. The central nave is flanked by enormous niches containing majestic marble statues of the Apostles. You can still see historical elements, including the magnificent Cosmatesque floor and the gilded wooden ceiling designed by Giacomo della Porta, based on a design by Michelangelo. The basilica also houses the Papal Cathedra (throne), symbolizing the Pope’s authority as the Bishop of Rome.
Relics and Features: The Papal Altar is said to house the wooden altar on which Saint Peter himself celebrated Mass. The transept holds important relics, including what is believed to be the heads of Saint Peter and Saint Paul. Also notable is the adjacent Lateran Baptistery, which is the first in Rome, and the beautiful 13th-century Cloister, a masterpiece of Cosmatesque art.

Location
The Archbasilica of Saint John Lateran is located on the Caelian Hill in Rome, Italy, specifically in the Lateran district (San Giovanni neighborhood).
Land Ownership: The site was originally owned by the noble Laterani family (hence the name “Lateran”). Their properties were confiscated by Emperor Nero. The land later came into the possession of Emperor Constantine the Great and his wife, Fausta.
Proximity to Vatican City: While it is the Pope’s official cathedral, it lies outside of Vatican City proper. It is one of the properties of the Holy See that enjoys extraterritorial status under the Lateran Treaty.

History
The basilica’s history begins with its founder, Emperor Constantine the Great.
Founding (c. 313–324 AD): Following his victory at the Battle of the Milvian Bridge and the subsequent Edict of Milan (313 AD), which legalized Christianity, Constantine donated the land—which was previously the site of barracks for his defeated rival Maxentius’s cavalry—to Pope Melchiades. The church was originally dedicated to the Most Holy Saviour (Christo Salvatori).
Consecration: It was consecrated in 324 AD by Pope Sylvester I, making it the oldest public church in Rome and the oldest basilica in the Western world.
Papal Seat (4th–14th Century): For approximately a thousand years, from the 4th to the 14th century, the Lateran Palace, adjacent to the basilica, served as the primary residence of the Popes. This established the Lateran as the central seat of the papacy and the heart of the Church’s life.
Rededications: In the 9th century, Pope Sergius III also dedicated the church to Saint John the Baptist, and in the 12th century, Pope Lucius II added Saint John the Evangelist to the title, resulting in its current long name.
Damage and Restoration: The basilica suffered significant damage over the centuries, including two major fires in the 14th century, which led to the Popes moving their residence back to Rome from Avignon, but choosing the Vatican as the new seat due to the Lateran’s poor condition. The extensive rebuilding by Francesco Borromini in the 17th century gave it the Baroque appearance seen today.

Historical Significance
The Basilica of St. John Lateran holds an unparalleled place in Christian history:
“Mother of All Churches”: It is considered the “ecumenical mother church of the Catholic faithful” and the highest-ranking church in the Catholic hierarchy, even above St. Peter’s Basilica in the Vatican.
Cathedral of the Pope: It houses the Cathedra (chair) of the Bishop of Rome, the Pope. This makes it the Cathedral of Rome and the center of the diocese. All new Popes traditionally take possession of this basilica shortly after their election.
Early Christian Architecture: It served as the prototype for the Constantinian-era Christian basilica architecture that was widely imitated across the Western world.
Major Synods and Councils: It was the site of five important ecumenical councils of the Catholic Church, known as the Lateran Councils (from the 12th to the 16th centuries), which shaped Christian doctrine and discipline.
Pilgrimage Site: It is one of the Seven Pilgrim Churches of Rome and a major site of pilgrimage, particularly for its Holy Door, which is only opened during Jubilee years.
Symbol of Christian Liberty: Its foundation by Emperor Constantine, immediately following the legalization of Christianity, marks a pivotal transition point from a persecuted religion to an officially sanctioned one, making it a powerful symbol of Christian freedom within the Roman Empire.