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The Pantheon (Latin Pantheon, from Greek Πάνθεων [ἱερόν] Pantheon, meaning "Temple of all the gods") is a building in Rome which was originally built as a temple to all the gods of Ancient Rome, and rebuilt circa 125 AD during Hadrian's reign. The intended degree of inclusiveness of this dedication is debated. The generic term pantheon is now applied to a monument in which illustrious dead are buried. It is the best preserved of all Roman buildings, and perhaps the best preserved building of its age in the world. It has been in continuous use throughout its history. The design of the extant building is sometimes credited to the Trajan's architect Apollodorus of Damascus, but it is equally likely that the building and the design should be credited to the emperor Hadrian or his architects. Since the 7th century, the Pantheon has been used as a Christian church. The Pantheon is currently the oldest standing domed structure in Rome. The height to the oculus and the diameter of the interior circle are the same, 43.3 metres.
The interior of the Pantheon was painted by Giovanni Paolo Panini in the 18th century. For another painting (1735) by the same artist see the Liechenstein Museum in Vienna. In the aftermath of the Battle of Actium (31 BC) Agrippa built and dedicated the original Pantheon during his third consulship (27 BC). Agrippa's Pantheon was destroyed along with other buildings in a huge fire in 80 AD. The current building dates from about 125 AD, during the reign of the Emperor Hadrian as date-stamps on the bricks reveal. It was totally reconstructed with the text of the original inscription ("M·AGRIPPA·L·F·COS·TERTIVM·FECIT", standing for Marcus Agrippa, Lucii filius, consul tertium fecit meaning, "Marcus Agrippa, son of Lucius, consul for the third time, made it") which was added to the new facade, a common practice in Hadrian's rebuilding projects all over Rome. Hadrian was a cosmopolitan emperor who travelled widely in the East and was a great admirer of Greek culture. He might have intended the Pantheon, a temple to all the gods, to be a kind of ecumenical or syncretist gesture to the subjects of the Roman Empire who did not worship the old gods of Rome, or who (as was increasingly the case) worshipped them under other names. How the building was actually used is not known.
Agrippa finished the construction of the building called the Pantheon. It has this name, perhaps because it received among the images which decorated it the statues of many gods, including Mars and Venus; but my own opinion of the name is that, because of its vaulted roof, it resembles the heavens. (Cassius Dio History of Rome 53.27.2)
The building was repaired by Septimius Severus and Caracalla in 202 AD, for which there is another, smaller inscription. This inscription reads "pantheum vetustate corruptum cum omni cultu restituerunt" ('with every refinement they restored the Pantheon worn by age').
The building's consecration as a church saved it from the abandonment, destruction, and the worst of the spoliation which befell the majority of ancient Rome's buildings during the early mediaeval period. 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.
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 remaining amount used by the Apostolic Camera for various 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, but according to at least one expert, the Pope's accounts state that about 90% of the bronze was used for the cannon, and that the bronze for the baldachin came from Venice. This led the Roman satirical figure Pasquino to issue the famous proverb: 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 twentieth century, a piece of the original, as could be reconstructed from Renaissance drawings and paintings, was recreated in one of the panels.
Antoine Desgodetz' elevation of the Pantheon in Les edifices antiques de Rome, Paris, 1779. These engravings, and others like them, served designers who never travelled to Rome. In the walls at the back of the portico were niches, probably for statues of Caesar, Augustus and Agrippa, or for the Capitoline Triad, or another set of gods. The large bronze doors to the cellar, once plated with gold, still remain but the gold has long since vanished. The pediment was decorated with a sculpture - holes may still be seen where the clamps which held the sculpture in place were fixed.
The 4,535 metric ton (5,000 tn) weight of the concrete dome is concentrated on a ring of voussoirs 9.1 metres (30 ft) in diameter which form the oculus while the downward thrust of the dome is carried by eight barrel vaults in the 6.4 metre (21 ft) thick drum wall into eight piers. The thickness of the dome varies from 6.4 metres (21 ft) at the base of the dome to 1.2 metres (4 ft) around the oculus. The height to the oculus and the diameter of the interior circle are the same, 43.3 metres (142 ft), so the whole interior would fit exactly within a cube alternatively, the interior could house a sphere 43.3 metres (142 ft) in diameter). The Pantheon holds the record for the largest unreinforced concrete dome. The interior of the roof was possibly intended to symbolise the arched vault of the heavens. The Great Eye at the dome's apex is the source of all light. The oculus also serves as a cooling and ventilation method. During storms, a drainage system below the floor handles the rain that falls through the oculus.
The interior features sunken panels (coffers), which, in antiquity, may have contained bronze stars, rosettes, or other ornaments. This coffering was not only decorative, but also reduced the weight of the roof, as did the elimination of the apex by means of the Great Eye. The top of the rotunda wall features a series of brick-relieving arches, visible on the outside and built into the mass of the brickwork. The Pantheon is full of such devices - for example, there are relieving arches over the recesses inside - but all these arches were, of course, originally hidden by marble facing on the interior and possibly by stone revetment or stucco on the exterior. Some changes have been made in the interior decoration.
The lower parts of the interior of the Pantheon are richly decorated in coloured marbles; the coffered upper parts are unadorned concrete. The exact composition of the Roman concrete used in the dome remains a mystery. An unreinforced dome in these proportions made of modern concrete would hardly stand the load of its own weight, since concrete has very low tensile strength, yet the Pantheon has stood for centuries. It is known from Roman sources that their concrete is made up of a pasty hydrate of lime, with pozzolanic ash (Latin pulvis puteolanum) and lightweight pumice from a nearby volcano, and fist-sized pieces of rock. In this, it is very similar to modern concrete. The high tensile strength appears to come from the way the concrete was applied in very small amounts and then was tamped down after every application to remove excess water and trapped air bubbles. This appears to have increased its strength enormously.
As the best-preserved example of an Ancient Roman monumental building, the Pantheon has been enormously influential in Western Architecture from at least the Renaissance on; starting with Brunelleschi's 42-meter dome of Santa Maria del Fiore in Florence, completed in 1436 – the first sizeable dome to be constructed in Western Europe since Late Antiquity. The style of the Pantheon can be detected in many buildings of the nineteenth and twentieth centuries; numerous city halls, universities and public libraries echo its portico-and-dome structure. Examples of notable buildings influenced by the Pantheon include: the Panthéon in Paris, the Temple in Dartrey, the British Museum Reading Room, Manchester Central Library, Thomas Jefferson's Rotunda at the University of Virginia, the Rotunda of Mosta in Malta, Low Memorial Library at Columbia University, New York, the domed Marble Hall of Sanssouci palace in Potsdam, Germany, the State Library of Victoria, and the Supreme Court Library of Victoria, both in Melbourne, Australia, the 52-meter-tall Ottokár Prohászka Memorial Church in Székesfehérvár, Hungary, as well as the California State Capitol in Sacramento.
Decoration while a Christian Church
The first niche to the right of the entrance holds a Madonna of the Girdle and St Nicholas of Bari (1686) painted by an unknown artist. The first chapel on the right, the Chapel of the Annunciation, has a fresco of the Annunication attributed to Melozzo da Forli. On the left side is a canvas by Clement Maioli of St Lawrence and St Agnes (1645-1650). On the right wall is the Incredulity of St Thomas (1633) by Pietro Paolo Bonzi.
The second niche has a 15th century fresco of the Tuscan school, depicting the Coronation of the Virgin. In the second chapel is the tomb of King Victor Emmanuel II (died 1878). It was originally dedicated to the Holy Spirit. A competition was held to decide which architect should be given the honour of designing it. Giuseppe Sacconi participated, but lost - he would later design the tomb of Umberto I in the opposite chapel. Manfredio Manfredi won the competition, and started work in 1885. The tomb consists of a large bronze plaque surmounted by a Roman eagle and the arms of the house of Savoy. The golden lamp above the tomb burns in honour of Victor Emmanuel III, who died in exile in 1947.
The third niche has a sculpture by Il Lorenzone of St Anne and the Blessed Virgin. In the third chapel is a 15th-century painting of the Umbrian school, The Madonna of Mercy between St Francis and St John the Baptist. It is also known as the Madonna of the Railing, because it originally hung in the niche on the left-hand side of the portico, where it was protected by a railing. It was moved to the Chapel of the Annunciation, and then to its present position some time after 1837. The bronze epigram commemorated Pope Clement XI's restoration of the sanctuary. On the right wall is the canvas Emperor Phocas presenting the Pantheon to Pope Boniface IV (1750) by an unknown. There are three memorial plaques in the floor, one commemorating a Gismonda written in the vernacular. The final niche on the right side has a statue of St. Anastasio (1725) by Bernardino Cametti.
Bust of the painter Raphael, above his tomb in the PantheonOn the first niche to the left of the entrance is an Assumption (1638) by Andrea Camassei. The first chapel on the left is the Chapel of St Joseph in the Holy Land and is the chapel of the Confraternity of the Virtuosi at the Pantheon. This refers to the confraternity of artists and musicians that was formed here by a 16th-century Canon of the church, Desiderio da Segni, to ensure that worship was maintained in the chapel. The first members were, among others, Antonio da Sangallo the younger, Jacopo Meneghino, Giovanni Mangone, Zuccari, Domenico Beccafumi and Flaminio Vacca. The confraternity continued to draw members from the elite of Rome's artists and architects, and among later members we find Bernini, Cortona, Algardi and many others. The institution still exists, and is now called the Academia Ponteficia di Belle Arti (The Pontifical Academy of Fine Arts), based in the palace of the Cancelleria. The altar in the chapel is covered with false marble. On the altar is a statue of St Joseph and the Holy Child by Vincenzo de Rossi. To the sides are paintings (1661) by Francesco Cozza, one of the Virtuosi: Adoration of the Shepherds on left side and Adoration of the Magi on right. The stucco relief on the left, Dream of St Joseph is by Paolo Benaglia, and the one on the right, Rest during the flight from Egypt is by Carlo Monaldi. On the vault are several 17th-century canvases, from left to right: Cumean Sibyl by Ludovico Gimignani; Moses by Francesco Rosa; Eternal Father by Giovanni Peruzzini; David by Luigi Garzi and finally Eritrean Sibyl by Giovanni Andrea Carlone.
The second niche has a statue of St Agnes, by Vincenco Felici. The bust on the left is a portrait of Baldassare Peruzzi, derived from a plaster portrait by Giovanni Duprè. The tomb of King Umberto I and his wife Margherita di Savoia is in the next chapel. The chapel was originally dedicated to St Michael the Archangel, and then to St. Thomas the Apostle. The present design is by Giuseppe Sacconi, completed after his death by his pupil Guido Cirilli. The tomb consists of a slab of alabaster mounted in gilded bronze. The frieze has allegorical representations of Generosity, by Eugenio Maccagnani, and Munificence, by Arnaldo Zocchi. The royal tombs are maintained by the National Institute of Honour Guards to the Royal Tombs, founded in 1878. They also organise picket guards at the tombs. The altar with the royal arms is by Cirilli.
The third niche holds the mortal remains - his Ossa et cineres, "Bones and ashes", as the inscription on the sarcophagus says - of the great artist Raphael. His fiancée, Maria Bibbiena is buried to the right of his sarcophagus; she died before they could marry. The sarcophagus was given by Pope Gregory XVI, and its inscription reads ILLE HIC EST RAPHAEL TIMUIT QUO SOSPITE VINCI / RERUM MAGNA PARENS ET MORIENTE MORI, meaning "Here lies Raphael, by whom the mother of all things (Nature) feared to be overcome while he was living, and while he was dying, herself to die". The epigraph was written by Pietro Bembo. The present arrangement is from 1811, designed by Antonio Munoz. The bust of Raphael (1833) is by Giuseppe Fabris. The two plaques commemorate Maria Bibbiena and Annibale Carracci. Behind the tomb is the statue known as the Madonna del Sasso (Madonna of the Rock) so named because she rests one foot on a boulder. It was commissioned by Raphael and made by Lorenzetto in 1524.
In the Chapel of the Crucifixion, the Roman brick wall is visible in the niches. The wooden crucifix on the altar is from the 15th century. On the left wall is a Descent of the Holy Ghost (1790) by Pietro Labruzi. On the right side is the low relief Cardinal Consalvi presents to Pope Pius VII the five provinces restored to the Holy See (1824) made by the Danish sculptor Bertel Thorvaldsen. The bust is a portrait of Cardinal Agostino Rivarola. The final niche on this side has a statue of St. Rasius (S. Erasio) (1727) by Francesco Moderati.