|Location||Regione III Isis et Serap|
|Built in||c. 64-68 AD|
|Built by/for||Nero Claudius Caesar Augustus Germanicus|
|Type of structure||Roman villa|
|Related||List of ancient monuments|
The Domus Aurea (Latin, "Golden House") was a vast landscaped palace built by the Emperor Nero in the heart of ancient Rome after the great fire in 64 AD had destroyed a large part of the city and the aristocratic villas on the Palatine Hill.
It replaced and extended his Domus Transitoria that he had built as his first palace complex on the site.
Construction began after the great fire of 64 and was nearly completed before Nero's death in 68, a remarkably short time for such an enormous project.
Nero took great interest in every detail of the project, according to Tacitus, and oversaw the engineer-architects, Celer and Severus, who were also responsible for the attempted navigable canal with which Nero hoped to link Misenum with Lake Avernus.
Suetonius claims this of Nero and the Domus Aurea:
When the edifice was finished in this style and he dedicated it, he deigned to say nothing more in the way of approval than that he had at last begun to live like a human being.
The Domus Aurea complex covered parts of the slopes of the Palatine, Oppian, and Caelian hills, with an artificial lake in the marshy valley. Its size can only be approximated, as much of it has not been excavated. Some scholars place it at more than 300 acres (1.2 km2), while others estimate its size to have been less than 100 acres (0.40 km2). Suetonius describes the complex as "ruinously prodigal" as it included groves of trees, pastures with flocks, vineyards, and an artificial lake—rus in urbe, "countryside in the city".
To supply his lake in the valley between the Palatine, Oppian, and Caelian, Nero diverted water from the Aqua Claudia by a specially built branch aqueduct known as the Arcus Neroniani. This extended 2 kilometers west from the Claudia to the southern side of the Caelian Hill, from where it was distributed to an enormous nymphaeum on the eastern side of the hill and ultimately to the lake. This nymphaeum was created against the eastern retaining wall of the podium built to support the Temple of Claudius, which Nero demolished.
Nero also commissioned from the Greek Zenodorus a colossal 35.5 m (120 RF) high bronze statue of him, the Colossus Neronis. Pliny the Elder, however, puts its height at only 30.3 m (106.5 RF). The statue was placed just outside the main palace entrance at the terminus of the Via Appia in a large atrium of porticoes that divided the city from the private villa. This statue may have represented Nero as the sun god Sol, as Pliny saw some resemblance. This idea is widely accepted among scholars, but some are convinced that Nero was not identified with Sol while he was alive. The face of the statue was modified shortly after Nero’s death during Vespasian’s reign to make it truly a statue of Sol. Hadrian moved it, with the help of the architect Decrianus and 24 elephants, to a position next to the Flavian Amphitheater. This building took the name "Colosseum" in the Middle Ages, after the statue nearby, or, as some historians believe, because of the sheer size of the building.
The Golden House was designed as a place of entertainment, as shown by the presence of 300 rooms without any sleeping quarters. The main palace building was on the Esquiline Hill. No kitchens or latrines have been discovered. Contemporary conveniences such as heating pipes have also not been discovered.
Rooms sheathed in dazzling polished white marble had richly varied floor plans, complete with niches and exedras that concentrated or dispersed the daylight. There were pools in the floors and fountains splashing in the corridors.
Some of the extravagances of the Domus Aurea had repercussions for the future. The architects designed two of the principal dining rooms to flank an octagonal court, surmounted by a dome with a giant central oculus to let in light. It was an early use of Roman concrete construction. One innovation was destined to have an enormous influence on the art of the future: Nero placed mosaics, previously restricted to floors, in the vaulted ceilings. Only fragments have survived, but that technique was to be copied extensively, eventually ending up as a fundamental feature of Christian art: the apse mosaics that decorate so many churches in Rome, Ravenna, Sicily, and Constantinople.
Celer and Severus also created an ingenious mechanism, cranked by slaves, that made the ceiling underneath the dome revolve like the heavens, while perfume was sprayed and rose petals were dropped on the assembled diners. According to some accounts, perhaps embellished by Nero's political enemies, on one occasion such quantities of rose petals were dropped that one unlucky guest was asphyxiated (a similar story is told of the emperor Elagabalus).
The extensive gold leaf that gave the villa its name was not the only extravagant element of its decor: stuccoed ceilings were faced with semi-precious stones and ivory veneers, while the walls were frescoed, coordinating the decoration into different themes in each major group of rooms. Pliny the Elder watched it being built and mentions it in his Naturalis Historia.
Frescoes covered every surface that was not more richly finished. The main artist was Famulus (or Fabulus according to some sources). Fresco technique, working on damp plaster, demands a speedy and sure touch: Famulus and assistants from his studio covered a spectacular amount of wall area with frescoes. Pliny, in his Natural History, recounts how Famulus went for only a few hours each day to the Golden House, to work while the light was best. The swiftness of Famulus's execution gives a wonderful unity and astonishing delicacy to his compositions.
Pliny the Elder presents Amulius  as one of the principal painters of the domus aurea: "More recently, lived Amulius, a grave and serious personage, but a painter in the florid style. By this artist there was a Minerva, which had the appearance of always looking at the spectators, from whatever point it was viewed. He only painted a few hours each day, and then with the greatest gravity, for he always kept the toga on, even when in the midst of his implements. The Golden Palace of Nero was the prison-house of this artist's productions, and hence it is that there are so few of them to be seen elsewhere."
The Domus Aurea was probably never completed. Otho and possibly Titus allotted money to finish at least the structure on the Oppian Hill; this continued to be inhabited until it was destroyed in a fire under Trajan in 104 AD.
It was a severe embarrassment to Nero's successors as a symbol of decadence and it was stripped of its marble, jewels, and ivory within a decade. Although the Oppian villa continued to be inhabited for some years, soon after Nero’s death other parts of the palace and grounds, encompassing 2.6 km² (c. 1 mi²), were filled with earth and built over: the Baths of Titus were already being built on part of the site, probably the private baths, in 79 AD. On the site of the lake, in the middle of the palace grounds, Vespasian built the Flavian Amphitheatre, which could be reflooded at will, with the Colossus Neronis beside it. The Baths of Trajan, and the Temple of Venus and Rome were also built on the site. Within 40 years, the palace was completely obliterated. Paradoxically, this ensured the wall paintings' survival by protecting them from moisture.
When a young Roman inadvertently fell through a cleft in the Esquiline hillside at the end of the 15th century, he found himself in a strange cave or grotto filled with painted figures. Soon the young artists of Rome were having themselves let down on boards knotted to ropes to see for themselves. The Fourth Style frescoes that were uncovered then have faded to pale gray stains on the plaster now, but the effect of these freshly rediscovered Grotesque decorations was electrifying in the early Renaissance, which was just arriving in Rome.
When Raphael and Michelangelo crawled underground and were let down shafts to study them, the paintings were a revelation of the true world of antiquity. Beside the graffiti signatures of later tourists, like Casanova and the Marquis de Sade scratched into a fresco inches apart (British Archaeology June 1999), are the autographs of Domenico Ghirlandaio, Martin van Heemskerck, and Filippino Lippi.
It was even claimed that various classical artworks found at this time—such as the Laocoön and his Sons and Venus Kallipygos—were found within or near the Domus's remains, though this is now accepted as unlikely (high quality artworks would have been removed—to the Temple of Peace, for example—before the Domus was covered over with earth).
The frescoes' effect on Renaissance artists was instant and profound (it can be seen most obviously in Raphael's decoration for the loggias in the Vatican), and the white walls, delicate swags, and bands of frieze—framed reserves containing figures or landscapes—have returned at intervals ever since, notably in late 18th century Neoclassicism, making Famulus one of the most influential painters in the history of art.
20th century to present
Discovery led to the arrival of moisture starting the slow, inevitable process of decay; humidity sometimes reaches 90% inside the Domus. Heavy rain was blamed in the collapse of a chunk of ceiling. The presence of trees in the park above the Domus Aurea is likely causing further damage, as tree roots are slowly sinking into the walls, damaging the ceiling and frescoes; chemical compounds released from these roots are provoking additional deterioration. Unfortunately, many of these trees cannot be uprooted without damaging the Domus.
The sheer weight of earth on the Domus is causing a problem, as well, and architects believe that the ceiling will eventually collapse if the weight of between 2,500 and 3,000 kilograms per square metre is not lessened. A pilot project is in the works to replace the current park above the Domus, enlarged during Mussolini's regime, with a lighter roof garden planted with the type of flowers described by Pliny, Columella, and other ancient writers.
Today, one of the best-preserved parts of the Domus Aurea is the block of 50 communal toilets which would have been used by slaves and workers in Nero's time.
Increasing concerns about the condition of the building and the safety of visitors resulted in its closing at the end of 2005 for further restoration work. The complex was partially reopened on February 6, 2007, but closed on March 25, 2008 because of safety concerns.
The likely remains of Nero's rotating banquet hall and its underlying mechanism were unveiled by archaeologists on September 29, 2009.
Sixty square metres (645 square feet) of the vault of a gallery collapsed on March 30, 2010.
During renovation works on the Palatine Hill at the end of 2018, experts stumbled upon a barrel-vaulted room richly decorated with panthers, centaurs, the god Pan, and a sphinx, believed to have been built between 65 and 68 AD.   
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