Ancient In the aftermath of the
Battle of Actium (31 BC),
Marcus Vipsanius Agrippa started an impressive building program. The Pantheon was a part of the complex created by him on his own property in the
Campus Martius in 29–19 BC, which included three buildings aligned from south to north: the
Baths of Agrippa, the
Basilica of Neptune, and the Pantheon. It seems likely that the Pantheon and the Basilica of Neptune were Agrippa's
sacra privata, not
aedes publicae (public temples). The former would help explain how the building could have so easily lost its original name and purpose (Ziolkowski contends that it was originally the Temple of Mars in Campo) in such a relatively short period of time. It had long been thought that the current building was built by Agrippa, with later alterations undertaken, and this was in part because of the Latin inscription on the front of the temple which reads: () However, archaeological excavations have shown that the Pantheon of Agrippa had been completely destroyed except for the façade. Lise Hetland argues that the present construction began in 114, under
Trajan, four years after it was destroyed by fire for the second time (Oros. 7.12). She reexamined Herbert Bloch's 1959 paper, which is responsible for the commonly maintained Hadrianic date, and maintains that he should not have excluded all of the Trajanic-era bricks from his brick-stamp study. Her argument is particularly interesting in light of Heilmeyer's argument that, based on stylistic evidence,
Apollodorus of Damascus, Trajan's architect, was the obvious architect. The form of Agrippa's Pantheon is debated. As a result of excavations in the late 19th century, archaeologist
Rodolfo Lanciani concluded that Agrippa's Pantheon was oriented so that it faced south, in contrast with the current layout that faces north, and that it had a shortened T-shaped plan with the entrance at the base of the "T". This description was widely accepted until the late 20th century. While more recent archaeological diggings have suggested that Agrippa's building might have had a circular form with a triangular porch, and it might have also faced north, much like the later rebuildings, Ziolkowski complains that their conclusions were based entirely on surmise; according to him, they did not find any new datable material, yet they attributed everything they found to the Agrippan phase, failing to account for the fact that
Domitian, known for his enthusiasm for building and known to have restored the Pantheon after 80 AD, might well have been responsible for everything they found. Ziolkowski argues that Lanciani's initial assessment is still supported by all of the finds to date, including theirs; he expresses scepticism because the building they describe, "a single building composed of a huge pronaos and a circular cella of the same diameter, linked by a relatively narrow and very short passage (much thinner than the current intermediate block), has no known parallels in classical architecture and would go against everything we know of Roman design principles in general and of Augustan architecture in particular." The only passages referring to the decoration of the Agrippan Pantheon written by an eyewitness are in
Pliny the Elder's
Natural History. From him we know that "the capitals, too, of the pillars, which were placed by M. Agrippa in the Pantheon, are made of Syracusan bronze", that "the Pantheon of Agrippa has been decorated by Diogenes of Athens, and the Caryatides, by him, which form the columns of that temple, are looked upon as masterpieces of excellence: the same, too, with the statues that are placed upon the roof," and that one of Cleopatra's pearls was cut in half so that each half "might serve as pendants for the ears of Venus, in the Pantheon at Rome". The Augustan Pantheon was destroyed along with other buildings in a fire in 80 AD.
Domitian rebuilt the Pantheon, which was burnt again in 110 AD. The degree to which the decorative scheme should be credited to Hadrian's architects is uncertain. Finished by Hadrian but not claimed as one of his works, it used the text of the original inscription on the new
façade (a common practice in Hadrian's rebuilding projects all over Rome; the only building on which Hadrian put his own name was the
Temple to the Deified Trajan). How the building was actually used is not known. The
Historia Augusta says that Hadrian dedicated the Pantheon (among other buildings) in the name of the original builder (Hadr. 19.10), but the current inscription could not be a copy of the original; it does not tell us to whom Agrippa's foundation was dedicated, and, in Ziolkowski's opinion, it was highly unlikely that in 25 BC Agrippa would have presented himself as "consul tertium." On coins, the same words, "M. Agrippa L.f cos. tertium", were the ones used to refer to him after his death; consul tertium serving as "a sort of posthumous cognomen ex virtute, a remembrance of the fact that, of all the men of his generation apart from Augustus himself, he was the only one to hold the consulship thrice." Whatever the cause of the alteration of the inscription might have been, the new inscription reflects the fact that there was a change in the building's purpose.
Cassius Dio, a Graeco-Roman senator, consul and author of a comprehensive
History of Rome, writing approximately 75 years after the Pantheon's reconstruction, mistakenly attributed the domed building to Agrippa rather than Hadrian. Dio appears to be the only near-contemporaneous writer to mention the Pantheon. Even by 200, there was uncertainty about the origin of the building and its purpose: In 202, the building was repaired by the joint emperors
Septimius Severus and his son
Caracalla (fully
Marcus Aurelius Antoninus), for which there is another, smaller inscription on the
architrave of the façade, under the aforementioned larger text. This now-barely legible inscription reads: : : In
English, this means: :
Imperator Caesar Lucius Septimius Severus Pius Pertinax, victorious in
Arabia, victor of
Adiabene, the greatest victor in
Parthia,
Pontifex Maximus, 10 times
tribune, 11 times proclaimed commander, three times
consul,
Pater Patriae,
proconsul, and :Imperator Caesar
Marcus Aurelius Antoninus Pius Felix Augustus, five times tribune, consul, proconsul, have carefully restored the Pantheon ruined by age.
Medieval In 609, the
Byzantine emperor Phocas (who also had
his namesake column constructed nearby) gave the building to
Pope Boniface IV, who converted it into a Christian church and consecrated it to St. Mary and the Martyrs on 13 May 609: "Another Pope, Boniface, asked the same [Emperor Phocas, in Constantinople] to order that in the old temple called the Pantheon, after the pagan filth was removed, a church should be made, to the holy virgin Mary and all the martyrs, so that the commemoration of the saints would take place henceforth where not gods but demons were formerly worshipped." Twenty-eight cartloads of holy relics of martyrs were said to have been removed from the
catacombs and placed in a
porphyry basin beneath the high altar. On its consecration, Boniface placed an icon of the Mother of God as '
Panagia Hodegetria' (All Holy Directress) within the new sanctuary. The building's consecration as a church saved it from the abandonment, destruction, and the worst of the spoliation that befell the majority of ancient Rome's buildings during the
Early Middle Ages. However,
Paul the Deacon records the spoliation of the building by the Emperor
Constans II, who visited Rome in July 663: Remaining at Rome twelve days he pulled down everything that in ancient times had been made of metal for the ornament of the city, to such an extent that he even stripped off the roof of the church [of the blessed Mary], which at one time was called the Pantheon, and had been founded in honour of all the gods and was now by the consent of the former rulers the place of all the martyrs; and he took away from there the bronze tiles and sent them with all the other ornaments to Constantinople. Much fine marble has been removed over the centuries – for example, capitals from some of the
pilasters are in the
British Museum. Two columns were swallowed up in the medieval buildings that abutted the Pantheon on the east and were lost. In the early 17th century,
Urban VIII Barberini tore away the bronze ceiling of the portico, and replaced the medieval campanile with the famous twin towers (often wrongly attributed to Bernini) called "the ass's ears", which were not removed until the late 19th century. The only other loss has been the external sculptures, which adorned the
pediment above Agrippa's inscription. The
marble interior has largely survived, although with extensive restoration.
Renaissance Since the Renaissance the Pantheon has been the site of several important burials. Among those buried there are the painters
Raphael and
Annibale Carracci, the composer
Arcangelo Corelli, and the
architect Baldassare Peruzzi. In the 15th century, the Pantheon was adorned with paintings: the best-known is the
Annunciation by
Melozzo da Forlì.
Filippo Brunelleschi, among other architects, looked to the Pantheon as inspiration for their works.
Pope Urban VIII (1623 to 1644) ordered the bronze ceiling of the Pantheon's portico melted down. Most of the bronze was used to make
bombards for the fortification of
Castel Sant'Angelo, with the rest used by the
Apostolic Camera for other works. It is also said that the bronze was used by
Bernini in creating his famous
baldachin above the high
altar of
St. Peter's Basilica, though the archaeologist
Carlo Fea discovered from the Pope's accounts that about 90% of the bronze was used for the cannon, and that the bronze for the baldachin came from
Venice. Concerning this, an anonymous contemporary Roman satirist quipped in a
pasquinade (a publicly posted poem) that
quod non fecerunt barbari fecerunt Barberini ("What the barbarians did not do the
Barberinis [Urban VIII's family name] did"). In 1747, the broad frieze below the dome with its false windows was "restored," but bore little resemblance to the original. In the early decades of the 20th century, a piece of the original, as far as could be reconstructed from Renaissance drawings and paintings, was recreated in one of the panels. File:Giovanni Paolo Panini - Interior of the Pantheon, Rome - Google Art Project.jpg|The interior of the Pantheon in the 18th century, painted by
Giovanni Paolo Panini File:Jakob Alt - Das Pantheon und die Piazza della Rotonda in Rom - 1836.jpg|An 1836 view of the Pantheon by
Jakob Alt, showing the twin bell towers, in place from the early 17th to late 19th centuries
Modern Two monarchs of the
Kingdom of Italy are buried in the Pantheon:
King Vittorio Emanuele II and
King Umberto I, as well as Umberto's
Queen Consort,
Margherita. It was supposed to be the final resting place for the
Monarchs of Italy of the
House of Savoy, but the
Monarchy was abolished in June 1946 and the authorities have refused to grant a burial to the former kings who died in exile (
King Vittorio Emanuele III and
King Umberto II). The
National Institute for the Honour Guard of the Royal Tombs of the Pantheon, which was originally chartered by the
House of Savoy, and has subsequently operated with the authorisation of the Italian Republic, mounts a
guard of honour in front of the Royal tombs. The Pantheon is in use as a
Catholic church, and as such, visitors are asked to keep an appropriate level of deference.
Masses are celebrated there on Sundays and
holy days of obligation. Weddings are also held there from time to time. ==Structure==