Buried Dijon Medieval Palace Rewrites Burgundy's Elite Story

Archaeologists digging into a wooded hilltop west of Dijon have uncovered the remains of a Dijon medieval palace that adds a fresh piece to the picture of early medieval Burgundy. The complex at Montagne de Saint-Laurent, in the village of Mesmont, pairs a large stone church with substantial residential buildings laid out on a strict grid, and at least one room was kept warm by a Roman-style underfloor heating system. France's National Institute for Preventive Archaeological Research, known as Inrap, announced the findings this month. According to Inrap, the hilltop was a seat of power between the fifth and eighth centuries, when religious authority and elite households stood side by side.

A hilltop built for power

The Dijon medieval palace sits about twenty kilometres west of Dijon, on a prominent hill overlooking the Ouche valley. People have used the hilltop since the Neolithic period, but the current research programme focuses on the centuries when it became a densely built stronghold of Burgundy's elite. Fieldwork there began several years ago, and a new three year programme that started this year is now concentrating on the highest part of the plateau. The emerging plan shows several hundred square metres of buildings arranged in a regular, orthogonal pattern, an orderly layout that points to deliberate planning. Inrap describes the emerging remains as a high-status residential and religious complex, with substantial masonry buildings arranged around the church. Because the dig is a multi-year research programme rather than a rescue excavation ahead of construction, the team can work the same ground season after season.

Medievalists.net describes the finds as offering new insight into the lives of Burgundy's elites between the fifth and eighth centuries.

At the centre of the Dijon medieval palace complex stands a church first spotted during surveys in the nineteen seventies and excavated over several recent seasons. The building runs nearly twenty-eight metres in length and more than twelve metres across its widest point, ending in an apse. Inside, researchers found a chancel screen and the possible footings of a liturgical bench, confirming its role as a place of Christian worship, while a room along the church's southern side may have served as an annexe for the clergy. Since fieldwork began, the team has recovered more than five hundred fragments of glass, dozens of them likely from the church's windows, along with pieces of lighting equipment and glass vessels that point to a carefully furnished interior. Its scale is a reminder of how central Christian buildings were to the organisation of power in the period.

Roman comfort, medieval power

Immediately west of the church, the latest season exposed a large masonry building measuring roughly fifteen by twelve metres. The thickness of its walls and the quality of its mortar suggest it may have carried an upper storey. South of the church, another structure stretches for more than twenty metres, though its full extent has not yet been established.

The surprise at the Dijon medieval palace came from beneath the floor of one room, where archaeologists found the remains of a Roman-style hypocaust: rows of small pillars that once held up a suspended floor, with fragments of heating pipes and sections of raised concrete. Hot air circulated underneath and warmed the room above. It is the same system Roman villas used, still heating rooms centuries after Rome's western empire fell. The pilae, the small pillars of the hypocaust, survive in rows, along with fragments of the heating pipes and sections of the raised concrete floor they once held up.

An aerial photograph published with the announcement dates the large western building to the sixth and seventh centuries.

Taken together, the buildings of the Dijon medieval palace describe a regional centre where worship, residence and authority were physically intertwined. As reported by HeritageDaily, the orderly complex points to a place where religious and political power reinforced each other. It joins a run of recent early medieval finds, including a major early medieval monastery found on the Isle of Lismore, while specialists writing for Medievalists.net note that the precise identity of the people who lived there remains unknown. In a period when eastern France was divided among competing powers, a fortified hilltop with a church, heated halls and a planned layout reads as the seat of someone important, even if no name can yet be attached to it. Other outlets covering the announcement echo the caution that the identity of the occupants remains unknown.

The dig is far from over. The three year programme means archaeologists can return to the same trenches season after season, building the plan of the Dijon medieval palace piece by piece rather than racing a construction deadline. Each new wall line sharpens the picture of how power worked in early medieval Burgundy, and each trench adds detail to the Dijon medieval palace record: warm floors and window glass next to the swords and charters, and a church built to impress.

Sources: HeritageDaily and Medievalists.net, reporting on the Inrap announcement.