Instruct: Given a question, retrieve relevant documents that can help answer the question.
Query: When was the Pantheon in Rome constructed?
In order to avoid the difficulty of giving an exhaustive list of deities when devoting a temple or sacred building, a structure explicitly dedicated to "all deities" also came to be referred to as a "Pantheon". The best known of such structures is the Pantheon of Rome, first built between the years 27 BCE and 14 CE. The building standing today was constructed on the same site around 126 CE. It was dedicated to "all gods" as a gesture embracing the religious syncretism in the increasingly multicultural Roman Empire, with subjects worshipping gods from many cultures and traditions. The building was later renovated for use as a Christian church in 609 under Pope Boniface IV.
On 23 July 1725, the Pantheon was established as Cardinal-deaconry of S. Maria ad Martyres, i.e. a titular church for a cardinal-deacon.
Roman engineers build monumental arches, amphitheatres, aqueducts, public baths, true arch bridges, harbours, dams, vaults and domes on a very large scale across their Empire. Notable Roman inventions include the book (Codex), glass blowing and concrete. Because Rome was located on a volcanic peninsula, with sand which contained suitable crystalline grains, the concrete which the Romans formulated was especially durable. Some of their buildings have lasted 2000 years, to the present day. Roman society had also carried over the design of a door lock with tumblers and springs from Greece. Like many other aspects of innovation and culture that were carried on from Greece to Rome, the lines between where each one originated from have become skewed over time. These mechanisms were highly sophisticated and intricate for the era.
In the mid-5th century BC, when the Athenian Acropolis became the seat of the Delian League and Athens was the greatest cultural centre of its time, Pericles initiated an ambitious building project that lasted the entire second half of the century. The most important buildings visible on the Acropolis today — the Parthenon, the Propylaia, the Erechtheion and the temple of Athena Nike — were erected during this period. The Parthenon was built under the general supervision of the artist Phidias, who also had charge of the sculptural decoration. The architects Ictinos and Callicrates began their work in 447 BC, and the building was substantially completed by 432, but work on the decorations continued until at least 431.
The establishment of Constantinople served as one of Constantine's most lasting accomplishments, shifting Roman power eastward as the city became a center of Greek culture and Christianity. Numerous churches were built across the city, including the Hagia Sophia which was built during the reign of Justinian the Great and remained the world's largest cathedral for a thousand years. Constantine also undertook a major renovation and expansion of the Hippodrome of Constantinople; accommodating tens of thousands of spectators, the hippodrome became central to civic life and, in the 5th and 6th centuries, the epicenter of episodes of unrest, including the Nika riots. Constantinople's location also ensured its existence would stand the test of time; for many centuries, its walls and seafront protected Europe against invaders from the east and the advance of Islam. During most of the Middle Ages, the latter part of the Byzantine era, Constantinople was the largest and wealthiest city on the European continent and at times the largest in the world.
While there is evidence that the hill was inhabited as far back as the fourth millennium BC, it was Pericles (c. 495 – 429 BC) in the fifth century BC who coordinated the construction of the site's most important present remains including the Parthenon, the Propylaia, the Erechtheion and the Temple of Athena Nike. The Parthenon and the other buildings were damaged seriously during the 1687 siege by the Venetians during the Morean War when gunpowder being stored in the Parthenon was hit by a cannonball and exploded.
The Romans were renowned for their architecture, which is grouped with Greek traditions into "Classical architecture". Although there were many differences from Greek architecture, Rome borrowed heavily from Greece in adhering to strict, formulaic building designs and proportions. Aside from two new orders of columns, composite and Tuscan, and from the dome, which was derived from the Etruscan arch, Rome had relatively few architectural innovations until the end of the Republic.
In the 1st century BC, Romans started to use concrete widely. Concrete was invented in the late 3rd century BC. It was a powerful cement derived from pozzolana, and soon supplanted marble as the chief Roman building material and allowed many daring architectural forms. Also in the 1st century BC, Vitruvius wrote "De architectura", possibly the first complete treatise on architecture in history. In the late 1st century BC, Rome also began to use glassblowing soon after its invention in Syria about 50 BC. Mosaics took the Empire by storm after samples were retrieved during Lucius Cornelius Sulla's campaigns in Greece.
The Romans developed an intensive and sophisticated agriculture, expanded upon existing iron working technology, created laws providing for individual ownership, advanced stone masonry technology, advanced road-building (exceeded only in the 19th century), military engineering, civil engineering, spinning and weaving and several different machines like the Gallic reaper that helped to increase productivity in many sectors of the Roman economy. Roman engineers were the first to build monumental arches, amphitheatres, aqueducts, public baths, true arch bridges, harbours, reservoirs and dams, vaults and domes on a very large scale across their Empire. Notable Roman inventions include the book (Codex), glass blowing and concrete. Because Rome was located on a volcanic peninsula, with sand which contained suitable crystalline grains, the concrete which the Romans formulated was especially durable. Some of their buildings have lasted 2000 years, to the present day.
By the Imperial Period, the Romans had adopted the Greek combat sport (spelled in Latin as "pancratium") into their Games. In 393 A.D., the pankration, along with gladiatorial combat and all pagan festivals, was abolished by edict by the Christian Byzantine Emperor Theodosius I. Pankration itself was an event in the Olympic Games for some 1,400 years.
The metopes of the Parthenon are the surviving set of what were originally 92 square carved plaques of Pentelic marble originally located above the columns of the Parthenon peristyle on the Acropolis of Athens. If they were made by several artists, the master builder was certainly Phidias. They were carved between 447 or 446 BC. or at the latest 438 BC, with 442 BC as the probable date of completion. Most of them are very damaged. Typically, they represent two characters per metope either in action or repose.
Rome's first aqueduct was built in 312 BC, and supplied a water fountain at the city's cattle market. By the 3rd century AD, the city had eleven aqueducts, sustaining a population of over a million in a water-extravagant economy; most of the water supplied the city's many public baths. Cities and towns throughout the Roman Empire emulated this model, and funded aqueducts as objects of public interest and civic pride, "an expensive yet necessary luxury to which all could, and did, aspire".
As the Romans chose representations of sanctity over actual sacred spaces to participate in society, the communicative nature of space was opened to human manipulation. None of which would have been possible without the advances of Roman engineering and construction or the newly found marble quarries which were the spoils of war; inventions like the arch and concrete gave a whole new form to Roman architecture, fluidly enclosing space in taut domes and colonnades, clothing the grounds for imperial rulership and civic order. This was also a response to the changing social climate which demanded new buildings of increasing complexity — the colosseum, the residential block, bigger hospitals and academies. General civil construction such as roads and bridges began to be built.
Constantinople (; ) was the capital city of the Roman/Byzantine Empire (330–1204 and 1261–1453), and also of the brief Crusader state known as the Latin Empire (1204–1261), until finally falling to the Ottoman Empire (1453–1923). It was reinaugurated in 324 from ancient Byzantium as the new capital of the Roman Empire by Emperor Constantine the Great, after whom it was named, and dedicated on 11 May 330. The city was located in what is now the European side and the core of modern Istanbul.
Constantinople became established in the ecclesiastical hierarchy at the Council of Constantinople in 381. Second only to Rome, the legendary origins of the Patriarchate of Constantinople go back to St. Andrew, Metrophanes and Alexander of Constantinople. Constantinople's primacy over the Patriarchates of Alexandria and Antioch was reaffirmed at the Council of Chalcedon in 481, after which the papacy in Rome supported Constantinople in its dispute with Alexandria over monophysitism. Later, when Rome sought to assert its primacy over Byzantium, the Eastern Orthodox church developed the doctrine of pentarchy as a response.
Rome's population declined after its peak in the 2nd century. At the end of that century, during the reign of Marcus Aurelius, the Antonine Plague killed 2,000 people a day. Marcus Aurelius died in 180, his reign being the last of the "Five Good Emperors" and Pax Romana. His son Commodus, who had been co-emperor since AD 177, assumed full imperial power, which is most generally associated with the gradual decline of the Western Roman Empire. Rome's population was only a fraction of its peak when the Aurelian Wall was completed in the year 273 (in that year its population was only around 500,000).
Despite the fact that Rome is home to the Vatican City and St. Peter's Basilica, Rome's cathedral is the Archbasilica of St. John Lateran, located to the south-east of the city-centre. There are around 900 churches in Rome in total, aside from the cathedral itself, some others of note include: the Basilica di Santa Maria Maggiore, the Basilica of Saint Paul Outside the Walls, the Basilica di San Clemente, San Carlo alle Quattro Fontane and the Church of the Gesù. There are also the ancient Catacombs of Rome underneath the city. Numerous highly important religious educational institutions are also in Rome, such as the Pontifical Lateran University, Pontifical Biblical Institute, Pontifical Gregorian University, and Pontifical Oriental Institute.
The ancient Romans also had a complex system of aqueducts, which were used to transport water across long distances. The first Roman aqueduct was built in 312 BCE. The eleventh and final ancient Roman aqueduct was built in 226 CE. Put together, the Roman aqueducts extended over 450 kilometers, but less than seventy kilometers of this was above ground and supported by arches.
The Parish Basilica of Santa Maria del Popolo () is a titular church and a minor basilica in Rome run by the Augustinian order. It stands on the north side of Piazza del Popolo, one of the most famous squares in the city. The church is hemmed in between the Pincian Hill and Porta del Popolo, one of the gates in the Aurelian Wall as well as the starting point of Via Flaminia, the most important route from the north. Its location made the basilica the first church for the majority of travellers entering the city. The church contains works by several famous artists, such as Raphael, Gian Lorenzo Bernini, Caravaggio, Alessandro Algardi, Pinturicchio, Andrea Bregno, Guillaume de Marcillat and Donato Bramante.
The first endeavour to build a sanctuary for on the site of the present Parthenon was begun shortly after the Battle of Marathon (c. 490–488 BC) upon a solid limestone foundation that extended and levelled the southern part of the Acropolis summit. This building replaced a "hekatompedon" (meaning "hundred-footer") and would have stood beside the archaic temple dedicated to "Athena Polias" ("of the city"). The Older or Pre-Parthenon, as it is frequently referred to, was still under construction when the Persians sacked the city in 480 BC and razed the Acropolis.
The entire monument is made of Pentelic marble, from Mt. Pentelikon, 18.2 km northeast of the arch. Pentelic marble was used for the Parthenon and many other notable structures in Athens, although its quality can vary significantly. The marble used for the arch is of a lower grade that had more inclusions than that used in the best Athenian buildings. The arch was constructed without cement or mortar from solid marble, using clamps to connect the cut stones. It is 18m high, 13.5m wide, and 2.3m in depth. Its design is fully symmetrical from front to back and side to side.
The first such guidebooks for Medieval Rome were compiled in the 12th century to address the needs of travelers to Rome. The Seven Pilgrim Churches of Rome are listed in the following order in the guide by Franzini (1595): San Giovanni Laterano, St Peter's, San Paolo fuori le mura, Santa Maria Maggiore, San Lorenzo fuori le mura, San Sebastiano, and Santa Croce in Gerusalemme. Giovanni Baglione in his book list nine major churches of Rome, adding somewhat peculiarly the church of Santa Maria Annunziata dei Gonfalone and the trio of churches known once as "alle Tre Fontane", and located at the site of St Paul's martyrdom: Santi Vincenzo e Anastasio alle Tre Fontane, Santa Maria Scala Coeli and San Paolo alle Tre Fontane.
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.
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 the year 200, there was uncertainty about the origin of the building and its purpose:
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 medieval period. 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."
Mark Wilson Jones has attempted to explain the design adjustments carried out in relating the porch to the dome, arguing that the Pantheon's porch was originally designed for monolithic granite columns with shafts 50 Roman feet tall (weighing about 100 tons) and capitals 10 Roman feet tall in the Corinthian style. The taller porch would have hidden the second pediment visible on the intermediate block. Instead, after the intended columns failed to arrive, the builders made many awkward adjustments in order to use shafts 40 Roman feet tall and capitals eight Roman feet tall. This substitution was probably a result of logistical difficulties at some stage in the construction. Alternatively, it has also been argued that the scale of the portico related to the urban design of the space in front of the temple. The grey granite columns that were actually used in the Pantheon's pronaos were quarried in Egypt at Mons Claudianus in the eastern mountains. Each was tall, in diameter, and 60 tons in weight. These were dragged more than from the quarry to the river on wooden sledges. They were floated by barge down the Nile River when the water level was high during the spring floods, and then transferred to vessels to cross the Mediterranean Sea to the Roman port of Ostia. There, they were transferred back onto barges and pulled up the Tiber River to Rome. After being unloaded near the Mausoleum of Augustus, the site of the Pantheon was still about 700 metres away. Thus, it was necessary to either drag them or to move them on rollers to the construction site.