Hadrian's Villa at Tivoli: The Emperor's Country Palace

Hadrian’s Villa (Villa Adriana) is a vast complex of palaces, baths, pools, gardens and service buildings built by the Roman emperor Hadrian near Tivoli, about 30 km east of Rome, between about AD 118 and 138. It was less a single house than an imperial town, where the emperor lived, entertained and governed. Its ruins, a UNESCO World Heritage Site since 1999, are among the most important in Italy and have inspired architects since the Renaissance.

Background

Hadrian became emperor in AD 117. A great traveller and enthusiast for Greek culture and architecture, he spent years touring the provinces, from Britain to Egypt. He also wanted a retreat outside the crowded capital.

He chose a site on the lower slopes below Tibur (Tivoli), a hill town already popular for country villas, where an earlier Republican-era villa stood, possibly owned by the family of his wife, Vibia Sabina. The land offered water, building stone and good access to Rome along the Via Tiburtina and the river Aniene. Brick stamps show work began soon after his accession and continued in several phases until his death.

Layout and main buildings

The villa spread over at least 120 hectares, and probably more, across a series of terraces and valleys. More than 30 major structures are known. They were linked by covered walkways, gardens and an extensive network of underground tunnels for servants, carts and supplies, so that service traffic stayed out of sight.

Among the best-known buildings are:

• The Maritime Theatre (Teatro Marittimo): a circular island villa surrounded by a ring-shaped moat and a colonnade, reached by small bridges. It is often seen as Hadrian’s private retreat within the retreat.
• The Poikile: a huge rectangular garden enclosure with a central pool, about 230 metres long, named after the Painted Stoa in Athens.
• The Canopus and Serapeum: a long pool lined with columns and statues, including copies of the caryatids of the Erechtheion in Athens, ending in a semi-domed summer dining hall.
• The Great and Small Baths: bath buildings with bold vaults and domes.
• The Piazza d’Oro: a lavish peristyle court with an elaborate domed pavilion.
• The Imperial Palace: the main residential block, with courtyards, libraries and halls.

The Historia Augusta, a late Roman collection of imperial biographies, says Hadrian named parts of the villa after famous places, such as the Lyceum, the Academy, the Prytaneum, Canopus, the Poikile and the Vale of Tempe, and even included a representation of the underworld. Matching these names to particular ruins is mostly modern guesswork.

Architecture and engineering

The villa is a laboratory of Roman architecture. Its builders used brick-faced concrete to create curving walls, domes, half-domes and unusual vault forms that would have been difficult in stone. Halls with alternating convex and concave walls in the Piazza d’Oro and the Small Baths anticipate effects of later Baroque architecture.

Hadrian himself was deeply interested in design. Cassius Dio tells a story that he quarrelled with Trajan’s architect Apollodorus of Damascus over his drawings of domes, which Apollodorus mocked as “pumpkins”. The anecdote may be exaggerated, but the experimental vaults at Tivoli show the same ambition as Hadrian’s rebuilding of the Pantheon.

Building materials came from close at hand. Local tuff and the travertine of the Tivoli area provided much of the structure, while imported coloured marbles, mosaics and painted stucco gave the interiors their richness. Many walls were faced in neat patterns of small squared stones and brick, a technique called opus reticulatum and opus mixtum, which can still be seen across the ruins.

Water was central to the design. Fountains, pools, nymphaea and cascades were fed from aqueducts serving the Tivoli area, and helped keep the villa cool in summer.

Life at the villa

The villa housed the emperor, his court, guards and a large staff of enslaved and free workers. Hadrian received embassies, worked on administration and entertained guests there, especially after he ended his long travels in the early 130s.

After the death of his young favourite Antinous, who drowned in the Nile in AD 130, Hadrian promoted his cult across the empire. Many statues of Antinous have been found at the villa, and excavations in the early 2000s uncovered a structure near the entrance that some archaeologists interpret as a shrine or memorial to him, called the Antinoeion. Its purpose is debated.

The villa was also a place of imperial business. Petitioners, officials and ambassadors had to travel out from Rome, and large guest quarters, called the Hospitalia, with small bedrooms opening off a central corridor, may have housed members of the court and the Praetorian Guard. Some historians think that Hadrian’s long stays at Tivoli contributed to his strained relations with the Senate in his final years.

Hadrian’s health declined in the late 130s. He moved to Baiae on the Bay of Naples, where he died on 10 July 138. He was buried in his great tomb by the Tiber, now Castel Sant’Angelo.

Later history and rediscovery

Later emperors used the villa occasionally, but from late antiquity it was abandoned and stripped. Marble was burned for lime, and stone, columns and statues were taken for buildings in Tivoli and Rome.

Interest revived in the Renaissance. Pope Pius II described the ruins in the mid-15th century. In the 16th century the architect and antiquarian Pirro Ligorio excavated the site for Cardinal Ippolito II d’Este, and many finds decorated the nearby Villa d’Este. Excavations in the 18th century produced famous works, including the Capitoline Doves mosaic, discovered in 1737. Giovanni Battista Piranesi’s etchings and plans spread the villa’s fame among Grand Tour travellers and architects across Europe.

Art and influence

The villa was richly decorated with sculpture, much of it copies or reworkings of famous Greek originals, together with portraits and Egyptian-style statues. Among the best-known finds are the two centaurs in grey-black marble found in 1736 by Cardinal Giuseppe Alessandro Furietti, the Capitoline Doves mosaic, and many portraits of Antinous, some showing him as an Egyptian god. Such works are now displayed in the Capitoline and Vatican Museums in Rome, while other pieces reached collections across Europe and North America through the 18th-century antiquities trade.

The architecture proved just as influential. Renaissance and Baroque architects, including Francesco Borromini, studied its curving plans and vaults. Piranesi’s surveys made its layout famous in the 18th century, and the young Le Corbusier sketched the ruins during his travels in 1911. Modern architects have continued to admire the way the villa groups separate buildings, courts and water features into a loose, picturesque whole rather than a single symmetrical palace.

Today only part of the site has been excavated, and archaeologists continue to uncover new structures. The nearby Villa d’Este, partly decorated with marbles taken from Hadrian’s Villa, is itself a separate World Heritage Site.

Timeline

• AD 117: Hadrian becomes emperor.
• c. AD 118: Construction of the villa begins.
• AD 121-125 and 128-c. 132: Hadrian’s long journeys through the provinces.
• AD 130: Antinous drowns in the Nile.
• AD 138, 10 July: Hadrian dies at Baiae.
• 16th century: Pirro Ligorio excavates for Cardinal Ippolito d’Este.
• 1737: The Capitoline Doves mosaic is found.
• 1999: Villa Adriana is inscribed as a UNESCO World Heritage Site.

Why it matters

Hadrian’s Villa shows how a Roman emperor lived and how freely Roman builders could shape space with concrete. Its ruins have supplied museums with ancient sculpture and given architects from the Renaissance to the 20th century a source of forms and ideas.