Old St. Peter's Basilica was the church buildings that stood, from the 4th to 16th centuries, where
St. Peter's Basilica stands today in
Vatican City
Vatican City, officially the Vatican City State (; ), is a Landlocked country, landlocked sovereign state and city-state; it is enclaved within Rome, the capital city of Italy and Bishop of Rome, seat of the Catholic Church. It became inde ...
. Construction of the
basilica
In Ancient Roman architecture, a basilica (Greek Basiliké) was a large public building with multiple functions that was typically built alongside the town's forum. The basilica was in the Latin West equivalent to a stoa in the Greek Eas ...
, built over the historical site of the
Circus of Nero
The so-called Circus of Nero or Circus of Caligula was a circus (building), circus in ancient Rome, located mostly in the present-day Vatican City.
It was first built under Caligula.
History
The ''Ager Vaticanus'', the alluvial plain outs ...
, began during the reign of Roman Emperor
Constantine I
Constantine I (27 February 27222 May 337), also known as Constantine the Great, was a Roman emperor from AD 306 to 337 and the first Roman emperor to convert to Christianity. He played a Constantine the Great and Christianity, pivotal ro ...
. The name "old St. Peter's Basilica" has been used since the construction of the current basilica to distinguish the two buildings.
History
Construction began by orders of the Roman Emperor
Constantine I
Constantine I (27 February 27222 May 337), also known as Constantine the Great, was a Roman emperor from AD 306 to 337 and the first Roman emperor to convert to Christianity. He played a Constantine the Great and Christianity, pivotal ro ...
between 318 and 322, after his
conversion to Christianity
Conversion to Christianity is the religious conversion of a previously non-Christian person that brings about changes in what sociologists refer to as the convert's "root reality" including their social behaviors, thinking and ethics. The sociol ...
and took about 40 years to complete. Over the next twelve centuries, the church gradually gained importance, eventually becoming a major place of pilgrimage in
Rome
Rome (Italian language, Italian and , ) is the capital city and most populated (municipality) of Italy. It is also the administrative centre of the Lazio Regions of Italy, region and of the Metropolitan City of Rome. A special named with 2, ...
.
Papal coronation
A papal coronation was the formal ceremony of the placing of the papal tiara on a newly elected pope. The first recorded papal coronation was of Pope Nicholas I in 858. The most recent was the 1963 coronation of Paul VI, who soon afterwards aba ...
s were held at the basilica, and in 800,
Charlemagne
Charlemagne ( ; 2 April 748 – 28 January 814) was List of Frankish kings, King of the Franks from 768, List of kings of the Lombards, King of the Lombards from 774, and Holy Roman Emperor, Emperor of what is now known as the Carolingian ...
was
crowned emperor
The word ''emperor'' (from , via ) can mean the male ruler of an empire. ''Empress'', the female equivalent, may indicate an emperor's wife (empress consort), mother/grandmother (empress dowager/grand empress dowager), or a woman who rules ...
of the
Carolingian Empire
The Carolingian Empire (800–887) was a Franks, Frankish-dominated empire in Western and Central Europe during the Early Middle Ages. It was ruled by the Carolingian dynasty, which had ruled as List of Frankish kings, kings of the Franks since ...
there. In 846,
Saracen
upright 1.5, Late 15th-century German woodcut depicting Saracens
''Saracen'' ( ) was a term used both in Greek and Latin writings between the 5th and 15th centuries to refer to the people who lived in and near what was designated by the Rom ...
s
sacked and damaged the basilica. The raiders seem to have known about Rome's extraordinary treasures. Some basilicas, such as St. Peter's Basilica, were outside the
Aurelian walls
The Aurelian Walls () are a line of city walls built between 271 AD and 275 AD in Rome, Italy, during the reign of the Roman Emperor Aurelian. They superseded the earlier Servian Wall built during the 4th century BC.
The walls enclosed all the ...
, and thus easy targets. They were "filled to overflowing with rich liturgical vessels and with jeweled reliquaries housing all of the relics recently amassed". As a result, the raiders destroyed
Saint Peter's tomb and pillaged the holy shrine. In response
Pope Leo IV
Pope Leo IV (died 17 July 855) was the bishop of Rome and ruler of the Papal States from 10 April 847 to his death in 855. He is remembered for repairing Roman churches that had been damaged during the Arab raid against Rome, and for building the ...
built the
Leonine wall and rebuilt the parts of St. Peter's that had been damaged.
By the 15th century, the church was falling into ruin. Discussions on repairing parts of the structure commenced upon the pope's
return
Return may refer to:
In business, economics, and finance
* Return on investment (ROI), the financial gain after an expense.
* Rate of return, the financial term for the profit or loss derived from an investment
* Tax return, a blank document or t ...
from
Avignon
Avignon (, , ; or , ; ) is the Prefectures in France, prefecture of the Vaucluse department in the Provence-Alpes-Côte d'Azur region of southeastern France. Located on the left bank of the river Rhône, the Communes of France, commune had a ...
. Two people involved in this reconstruction were
Leon Battista Alberti
Leon Battista Alberti (; 14 February 1404 – 25 April 1472) was an Italian Renaissance humanist author, artist, architect, poet, Catholic priest, priest, linguistics, linguist, philosopher, and cryptography, cryptographer; he epitomised the natu ...
and
Bernardo Rossellino, who improved the
apse
In architecture, an apse (: apses; from Latin , 'arch, vault'; from Ancient Greek , , 'arch'; sometimes written apsis; : apsides) is a semicircular recess covered with a hemispherical Vault (architecture), vault or semi-dome, also known as an ' ...
and partially added a multi-story
benediction
A benediction (, 'well' + , 'to speak') is a short invocation for divine help, blessing and guidance, usually at the end of worship service. It can also refer to a specific Christian religious service including the exposition of the eucharisti ...
loggia
In architecture, a loggia ( , usually , ) is a covered exterior Long gallery, gallery or corridor, often on an upper level, sometimes on the ground level of a building. The corridor is open to the elements because its outer wall is only parti ...
to the
atrium façade, on which construction continued intermittently until the new basilica was begun. Alberti pronounced the basilica a structural abomination:
At first,
Pope Julius II
Pope Julius II (; ; born Giuliano della Rovere; 5 December 144321 February 1513) was head of the Catholic Church and ruler of the Papal States from 1503 to his death, in February 1513. Nicknamed the Warrior Pope, the Battle Pope or the Fearsome ...
had every intention of preserving the old building, but his attention soon turned toward tearing it down and building a new structure. Many people of the time were shocked by the proposal, as the building represented papal continuity going back to
Saint Peter
Saint Peter (born Shimon Bar Yonah; 1 BC – AD 64/68), also known as Peter the Apostle, Simon Peter, Simeon, Simon, or Cephas, was one of the Twelve Apostles of Jesus and one of the first leaders of the Jewish Christian#Jerusalem ekklēsia, e ...
. The original altar was to be preserved in the new structure that housed it. The church was demolished in 1505 and construction of the
new church began the following year.
Design

The design was a typical basilica form
with the plan and elevation resembling those of Roman basilicas and audience halls, such as the
Basilica Ulpia in
Trajan's Forum
Trajan's Forum (; ) was the last of the Imperial fora to be constructed in ancient Rome. The architect Apollodorus of Damascus oversaw its construction.
History
This forum was built on the order of the emperor Trajan with the spoils of war f ...
and Constantine's own
Aula Palatina
__NOTOC__
The Aula Palatina, also called Basilica of Constantine (), at Trier, Germany, is a Roman palace basilica and an early Christian structure built between AD 300 and 310 during the reigns of Constantius Chlorus and Constantine the Great.
...
at
Trier
Trier ( , ; ), formerly and traditionally known in English as Trèves ( , ) and Triers (see also Names of Trier in different languages, names in other languages), is a city on the banks of the Moselle (river), Moselle in Germany. It lies in a v ...
, rather than the design of any
Greco-Roman temple. The design may have been derived from the description of
Solomon's Temple
Solomon's Temple, also known as the First Temple (), was a biblical Temple in Jerusalem believed to have existed between the 10th and 6th centuries Common Era, BCE. Its description is largely based on narratives in the Hebrew Bible, in which it ...
in
1 Kings 6.
Constantine took great pains to build the basilica on the site he and
Pope Sylvester I believed to be Saint Peter's grave, which had been marked since at least the second century.
[ This influenced the layout of the building, which was erected on the sloped ]Vatican Hill
Vatican Hill (; ; ) is a hill in Rome, located on the right bank (west side) of Tiber river, opposite to the traditional seven hills of Rome. The hill also gave the name to Vatican City. It is the location of St. Peter's Basilica.
Etymology
...
, on the west bank of the Tiber River
The Tiber ( ; ; ) is the List of rivers of Italy, third-longest river in Italy and the longest in Central Italy, rising in the Apennine Mountains in Emilia-Romagna and flowing through Tuscany, Umbria, and Lazio, where it is joined by the R ...
.[ Notably, since the site was outside the boundaries of the ancient city, the apse with the ]altar
An altar is a table or platform for the presentation of religion, religious offerings, for sacrifices, or for other ritualistic purposes. Altars are found at shrines, temples, Church (building), churches, and other places of worship. They are use ...
was located in the west, so that the basilica's façade could be approached from Rome itself to the east. The exterior, unlike earlier pagan temples, was not lavishly decorated.[
The church was capable of housing from 3,000 to 4,000 worshipers at one time. It consisted of five aisles, a wide central ]nave
The nave () is the central part of a church, stretching from the (normally western) main entrance or rear wall, to the transepts, or in a church without transepts, to the chancel. When a church contains side aisles, as in a basilica-type ...
and two smaller aisles to each side, which were each divided by 21 marble columns, taken from earlier pagan buildings. It was over long, built in the shape of a Latin cross, and had a gabled roof which was timbered on the interior and which stood at over at the center. In the 6th century, an atrium—known as the "Garden of Paradise"—was added at the entrance and had five doors, which led to the body of the church.
The altar of Old St. Peter's Basilica used several Solomonic columns. According to tradition, Constantine took these columns from the Temple of Solomon and gave them to the church; however, the columns were probably from an Eastern church
Eastern Christianity comprises Christian traditions and church families that originally developed during classical and late antiquity in the Eastern Mediterranean region or locations further east, south or north. The term does not describe a ...
. When Gian Lorenzo Bernini
Gian Lorenzo (or Gianlorenzo) Bernini (, ; ; Italian Giovanni Lorenzo; 7 December 1598 – 28 November 1680) was an Italians, Italian sculptor and Italian architect, architect. While a major figure in the world of architecture, he was more prom ...
built his baldacchino to cover the new St. Peter's altar, he drew from the twisted design of the old columns. Eight of the original columns were moved to the piers of the new St. Peter's.
Mosaics
The great ''Navicella'' mosaic (1305–1313) in the atrium is attributed to Giotto di Bondone. This giant mosaic, commissioned by Cardinal Jacopo Stefaneschi, occupied the whole wall above the entrance arcade facing the courtyard. It depicted St. Peter walking on the waters. This extraordinary work was mainly destroyed during the construction of the new St. Peter's in the 16th century, but fragments were preserved. Navicella means "little ship" referring to the large boat which dominated the scene, and whose sail—filled by storm winds—loomed over the horizon. Such a natural representation of a seascape was known only from ancient works of art.
The nave ended with an arch, which held a mosaic of Constantine and Saint Peter, who presented a model of the church to Christ. On the walls, each having 11 windows, were frescoes of various people and scenes from both the Old and New Testament
The New Testament (NT) is the second division of the Christian biblical canon. It discusses the teachings and person of Jesus in Christianity, Jesus, as well as events relating to Christianity in the 1st century, first-century Christianit ...
. According to combined statements by Ghiberti and Vasari, Giotto painted five frescoes of the life of Christ and various other panels, some of which Vasari said were "either destroyed or carried away from the old structure of St. Peter's during the building of the new walls."
The fragment of an 8th-century mosaic, the Epiphany, is one of the very rare remaining pieces of the medieval decoration of Old St. Peter's Basilica. It is kept in the sacristy of Santa Maria in Cosmedin
The Basilica of Saint Mary in Cosmedin (; Latin: Santa Maria ''de Schola Graeca'') is a minor basilica, minor basilican churches of Rome, church in Rome, Italy, dedicated to the Mary, mother of Jesus, Virgin Mary. It is located in the rione (neig ...
and proves the high artistic quality of the destroyed mosaics. Another one, a standing madonna
Madonna Louise Ciccone ( ; born August 16, 1958) is an American singer, songwriter, record producer, and actress. Referred to as the "Queen of Pop", she has been recognized for her continual reinvention and versatility in music production, ...
, is on a side altar in the Basilica of San Marco
San Marco is one of the six sestiere (Venice), sestieri of Venice, lying in the heart of the city as the main place of Venice. San Marco also includes the island of San Giorgio Maggiore. Although the district includes Piazza San Marco, Saint Mar ...
in Florence
Florence ( ; ) is the capital city of the Italy, Italian region of Tuscany. It is also the most populated city in Tuscany, with 362,353 inhabitants, and 989,460 in Metropolitan City of Florence, its metropolitan province as of 2025.
Florence ...
.
File:Navicella mosaic - Fragment in Boville Ernica - dark.jpg, ''Navicella'' mosaic – fragment in Boville Ernica
File:Navicella mosaic - Fragment in Vatican - light.jpg, ''Navicella'' mosaic – fragment in Vatican
File:Byzantinischer Mosaizist um 705 001.jpg, Mosaic of the Adoration of the Magi, today in Santa Maria in Cosmedin
File:Mater misericordie mosaic St Peter Basilica Vatican.JPG, Mater misericordiae, today in San Marco in Florence
File:Ecclesia romana, XII sec. d.C., mosaico policromo, dalla Basilica di San Pietro.JPG, Mosaic, today in the Museo Barracco
File:Vatican 1016 2013.jpg, Two pairs of the original Solomonic columns now support curved pediments to form trompe-l'œil
; ; ) is an artistic term for the highly realistic optical illusion of three-dimensional space and objects on a Two-dimensional space, two-dimensional surface. , which is most often associated with painting, tricks the viewer into perceiving p ...
porticoes on the piers of St. Peter's
File:Speculum Romanae Magnificentiae- Grotesque Winding Column in St. Peter's MET DP870256.jpg, Solomonic Column
Tombs
Since the crucifixion and burial of Saint Peter in 64 AD, the spot was thought to be the location of the tomb of Saint Peter, where there stood a small shrine. With its increasing prestige, the church became richly decorated with statues, furnishings and elaborate chandeliers, and side tombs and altars were continuously added.
The structure was filled with tombs and bodies of saints and popes. Bones continued to be found in construction as late as February 1544.
The majority of these tombs were destroyed during the 16th and 17th centuries' demolition of Old St. Peter's Basilica (save one which was destroyed during the Saracen Sack of the church in 846). The remainder were transferred, mostly just the sarcophagi
A sarcophagus (: sarcophagi or sarcophaguses) is a coffin, most commonly carved in stone, and usually displayed above ground, though it may also be buried. The word ''sarcophagus'' comes from the Greek σάρξ ' meaning "flesh", and φ� ...
or coffins and their contents, to modern St. Peter's Basilica, which stands on the site of the original basilica, and a handful of other churches of Rome.
The only papal tombs to survive the demolition and be properly reconstructed in the present St Peter's are the two from the 1490s by Antonio del Pollaiuolo, of Pope Innocent VIII
Pope Innocent VIII (; ; 1432 – 25 July 1492), born Giovanni Battista Cybo (or Cibo), was head of the Catholic Church and ruler of the Papal States from 29 August 1484 to his death, in July 1492. Son of the viceroy of Naples, Cybo spent his ea ...
and Pope Sixtus IV
Pope Sixtus IV (or Xystus IV, ; born Francesco della Rovere; (21 July 1414 – 12 August 1484) was head of the Catholic Church and ruler of the Papal States from 9 August 1471 until his death in 1484. His accomplishments as pope included ...
. These were well-regarded and innovative works, with bronze effigies by a major Florentine sculptor.
Along with the repeated translations from the ancient Catacombs of Rome
The Catacombs of Rome () are ancient catacombs, underground burial places in and around Rome, of which there are at least forty, some rediscovered since 1578, others even as late as the 1950s.
There are more than fifty catacombs in the underg ...
and two 14th century fires in the 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 A ...
, the rebuilding of St. Peter's is responsible for the destruction of approximately half of all papal tombs. As a result, Donato Bramante, the chief architect of modern St. Peter's Basilica, has been remembered as ''Maestro Ruinante''.
''Stefaneschi Triptych''
The ''Stefaneschi Altarpiece'' is a triptych
A triptych ( ) is a work of art (usually a panel painting) that is divided into three sections, or three carved panels that are hinged together and can be folded shut or displayed open. It is therefore a type of polyptych, the term for all m ...
by the Italian medieval painter Giotto
Giotto di Bondone (; – January 8, 1337), known mononymously as Giotto, was an List of Italian painters, Italian painter and architect from Florence during the Late Middle Ages. He worked during the International Gothic, Gothic and Italian Ren ...
, commissioned by Cardinal
Cardinal or The Cardinal most commonly refers to
* Cardinalidae, a family of North and South American birds
**''Cardinalis'', genus of three species in the family Cardinalidae
***Northern cardinal, ''Cardinalis cardinalis'', the common cardinal of ...
Giacomo Gaetani Stefaneschi to serve as an altarpiece
An altarpiece is a painting or sculpture, including relief, of religious subject matter made for placing at the back of or behind the altar of a Christian church. Though most commonly used for a single work of art such as a painting or sculpture, ...
for one of the altars of Old St. Peter's Basilica in Rome.
It is a rare example in Giotto's work of a documented commission, and includes Giotto's signature, although the date, like most dates for Giotto, is disputed, and many scholars feel the artist's workshop was responsible for its execution. It had long been thought to have been made for the main altar of the church; more recent research suggests that it was placed on the "canon's altar", located in the nave, just to the left of the huge arched opening into the transept
A transept (with two semitransepts) is a transverse part of any building, which lies across the main body of the building. In cruciform ("cross-shaped") cruciform plan, churches, in particular within the Romanesque architecture, Romanesque a ...
.[Kempers and De Blaauw, 88–89; Kessler, 91–92.] It is now at the Pinacoteca Vaticana, Rome.
See also
* List of Greco-Roman roofs
* Index of Vatican City-related articles
Notes
Further reading
* (pp. 51–61)
* Weitzmann, Kurt, ed.,
Age of spirituality: late antique and early Christian art, third to seventh century
', no. 581, 1979, Metropolitan Museum of Art
The Metropolitan Museum of Art, colloquially referred to as the Met, is an Encyclopedic museum, encyclopedic art museum in New York City. By floor area, it is the List of largest museums, third-largest museum in the world and the List of larg ...
, New York,
External links
The Constantinian Basilica
Article by Jose Ruysschaert
book by Margherita Guarducci
{{Authority control
Rome, Old Saint Peter
Buildings and structures demolished in the 16th century
Sites of papal elections
Constantine the Great and Christianity
Old Saint Peter
Palaeo-Christian architecture in Italy
Destroyed Roman Catholic churches in Rome
Basilica churches in Rome
Basilica churches in Vatican City