Who constructed the Domus Aurea?

Emperor Nero built the palace complex on the Oppian Hill following the great fire that devastated ancient Rome.

Why was the complex covered with earth in antiquity?

Later Roman emperors sought to dismantle the palace, stripping marble, ivory, and jewels before burying the halls to support new public baths and monuments.

What ancient buildings were constructed on top of the palace grounds?

The Flavian Amphitheatre was built over the former lake basin, alongside the Baths of Titus, the Baths of Trajan, and the Temple of Venus and Roma.

How were the wall paintings rediscovered after antiquity?

Subterranean rooms were uncovered when a Roman fell through a hillside opening, leading Renaissance painters to lower themselves underground to examine the grotteschi frescoes.

How did burial preserve the wall decorations?

Filling the halls with soil protected the painted plaster from atmospheric exposure and moisture until modern excavations uncovered the rooms.

What conservation risks threaten the underground site?

Moisture intrusion, elevated underground humidity, rainwater, and the physical weight of overlying park soil and trees cause structural stress and vault collapses.

Rome · Italie

Domus aurea: ce qu’il y a autour, comment y aller et quand venir · 2026

Residents around Colle Oppio walk daily across a public garden that rests directly on buried imperial vaults.

Domus Aurea · CC BY-SA 4.0

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Nero built his sprawling palace across the Oppian Hill after the great fire leveled central Rome.

Architects Severus and Celer designed the imperial complex across the Oppian Hill after the great fire. Nero oversaw the construction directly, ordering extensive halls and landscape grounds. Following his death, subsequent rulers stripped the marble and buried the brickwork under earth to construct the Flavian Amphitheatre and public baths. This burial unintentionally sealed the interior wall plaster against outside weathering.

Renaissance painters rediscovered the buried rooms after a passerby fell through a hillside opening into painted subterranean chambers. Artists including Raphael, Michelangelo, and Domenico Ghirlandaio had themselves lowered on ropes to copy the uncovered decorative schemes. These delicate antique motifs inspired the grotesque style across Italian decorative art, while later travelers carved their names directly into the painted plaster.

Modern exposure to outside atmosphere admitted moisture that continuously threatens the stability of the subterranean galleries. High humidity levels, rainfall infiltration, and root systems from the municipal park above place immense structural loads on the ancient vaulted masonry. Structural fractures and vault collapses have repeatedly forced prolonged site closures to allow engineering stabilization and climate controls.

Associations

NeroOrdered the palace constructed across the Oppian Hill after the urban fire.
Grotesque frescoesSubterranean wall decorations studied and copied by major Renaissance painters.
Flavian AmphitheatreBuilt by imperial successors over the site of the drained palace lake.
Structural humidityWater infiltration and park soil overhead cause recurrent gallery collapses.
Severus and CelerEngineered the vaulted palace layout and planned regional imperial canals.

Faits

Emperor Vespasian erected the Flavian Amphitheatre directly on the drained basin of Nero's artificial lake.
Architects Severus and Celer directed the original engineering and palace design for Nero.
Burial beneath imperial baths protected the interior frescoes from atmospheric moisture for centuries.
Artists including Michelangelo and Raphael climbed underground to study the newly uncovered wall frescoes.

Mis à jour le 10 septembre 2026Source : Wikipedia

Domus aurea: ce qu’il y a autour, comment y aller et quand venir · 2026

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Nero built his sprawling palace across the Oppian Hill after the great fire leveled central Rome.

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