21 March 2026 The Future is the Product of the Past

The Gallo-Roman Sanctuary Unearthed in France

During a recent archaeological excavation in the old Hôtel Dieu neighborhood of Rennes in north-western France, archaeologists discovered the remains of a once bustling ancient Roman city.

The excavations under the 19th-century hospital began in 2022, according to a June 18 news release from the French National Institute for Preventive Archaeological Research. Two years later, archaeologists are revealing the city’s appearance and how Roman daily life has been preserved under the earth.

The Hôtel Dieu neighborhood has seen tremendous upheaval and development since the city’s founding. Following significant excavation and embankment work, the first roads were constructed in the first century. The neighborhood’s interior was gradually filled with structures supporting both residential and commercial activity, constructed with low foundations and wooden posts.

The use of masonry was first demonstrated at the end of the first century with the building of a sizable sanctuary with a courtyard for the reception of the faithful. This sanctuary replaced a previous wooden structure that was constructed similarly. Stone-built homes, shops, and warehouses started to spring up, and the original roads were rebuilt, completely reintegrating the neighborhood into the thriving city.

During construction for a hospital in France, the ruins of an ancient Roman city was discovered. Photo: © Cyril Cornillot, Inrap
During construction for a hospital in France, the ruins of an ancient Roman city was discovered. Photo: © Cyril Cornillot, Inrap

The sanctuary, which dates to the third century AD, was discovered during the excavation of the area sacra, the north wall surrounding its courtyard. At least one temple is located within the northern portion of this wall, which is more than 100 meters long. To the south, a portion of an east-west street is integrated into the religious complex.



📣 Our WhatsApp channel is now LIVE! Stay up-to-date with the latest news and updates, just click here to follow us on WhatsApp and never miss a thing!!



Given its size and exclusivity within Rennes, it is possible that the sanctuary was once the civic sanctuary of the Redones, a group of Gallic people whose capital was the ancient Condate, which is now Rennes. These people are only known from inscriptions that were repurposed and found buried beneath the city wall.

Masonry at the turn of the first century allowed the Roman city to flourish. Photo: © Sandrine Lalain, Inrap
Masonry at the turn of the first century allowed the Roman city to flourish. Photo: © Sandrine Lalain, Inrap

During the 3rd century, the city also had a district with large private residences, according to the release. One had a large reception room where the owner could have received clients or guests, and it even had a heated floor. An air space was placed under the floor with columns, and then warm air would be pumped into the underground space, heating the floor above, researchers said.

The end of the 3rd century brought the decline of the neighborhood. The public sanctuary was dismantled, and the stones from the enclosing wall were recovered, possibly during the construction of the castrum around 270-280. To the northwest of the excavation, a domus was completely dismantled to open a quarry for extracting alluvial sands. Despite this, some residences continued to be occupied in the 4th century, leaving their mark on the landscape through the furniture discovered.

An open area under the floor allowed hot air to be pumped in and the floor to heat in one of the large private homes, researchers said.
 Photo: © Cyril Cornillot, Inrap
An open area under the floor allowed hot air to be pumped in and the floor to heat in one of the large private homes, researchers said. Photo: © Cyril Cornillot, Inrap

A funerary space was established in the ruins at the end of the third or the start of the fourth century. It was in use until the eighth century and housed more than 600 tombs.

Google Translate was used to translate the news release from the National Institute for Preventive Archaeological Research.

INRAP

Cover Photo: Excavations at the Rennes sanctuary. © Emmanuelle Collado, Inrap

Related Articles

The Discovery of a Bronze Age Game Board in Azerbaijan Challenges the Origin of One of the World’s Oldest Games

30 August 2024

30 August 2024

A new archaeological study revealed that an ancient board of a game, known as “Hounds and Jackals” or the “Game...

Ancient Agora Discovered in Hyllarima: Shops to Be Excavated in the Heart of the City

29 June 2025

29 June 2025

A major archaeological discovery has been made in the ancient city of Hyllarima in southwestern Türkiye—the city’s central agora has...

One of Andalusia’s Most Monumental 5,000-Year-Old Prehistoric Tombs Unearthed in Teba (Malaga)

23 September 2025

23 September 2025

A team of archaeologists from the University of Cádiz has uncovered one of Andalusia’s most monumental and best-preserved prehistoric tombs:...

War and Exodus in the Mysterious Kingdom: New Clues to Sanxingdui’s Bronze Age Collapse

30 September 2025

30 September 2025

A bold new theory is reshaping how scholars view one of China’s most enigmatic archaeological sites. According to Professor Sun...

A rare 3,300-year-old wooden yoke found in northern Italy

30 October 2023

30 October 2023

After eight years of complex excavation, recovery, and restoration, a rare 3,300-year-old wooden yoke discovered in a Late Bronze Age...

An 8,500-Year-Old Micro-Carved Bead—and a 10,000-Year-Old Skull Room—Reveal Sefertepe’s Hidden Symbolic World

30 November 2025

30 November 2025

An 8,500-year-old micro-carved bead and a 10,000-year-old skull room uncovered at Sefertepe reveal a remarkably complex symbolic world in Neolithic...

A Sunken Port Beneath the Red Sea May Have Reshaped the Map of Human Migration Out of Africa 20,000 Years Ago

26 July 2025

26 July 2025

New research suggests an ancient trade hub lies beneath Egypt’s Red Sea coast—offering clues to how early civilizations connected Africa...

Archaeologists may have found the lost 2,000-year-old ancient city of Bassania in Albania

19 June 2022

19 June 2022

Polish archaeologists may have discovered the 2,000-year-old lost city of Bassania in Albania. The remains of two large ancient stone...

Roman Wooden Cellar Found in Frankfurt, Germany

28 February 2024

28 February 2024

Archaeologists from the Frankfurt Archaeological Museum have recently uncovered a remarkably preserved wooden cellar in the Roman city of Nida...

Iron Age comb found made from human skull in UK

2 March 2023

2 March 2023

Researchers from the London Archaeological Museum (MOLA) determined that an Iron Age comb they found during an archaeological dig that...

The 1000-year Curse of the Croatian King Zvonimir

26 September 2023

26 September 2023

Croatia is a fascinating country that continually rises up people’s must-visit lists thanks to its sparkling Adriatic coastline, 1,244 islands,...

Underneath an Illegal Excavation House, a Subterranean City Is Revealed!

25 June 2021

25 June 2021

Upon the information that illegal excavations were carried out in a house in the İscehisar district of Afyonkarahisar in western...

Farmer Found Sarcophagus of Hellenistic Period in his Field

9 April 2021

9 April 2021

The citizen named E. G. in Akçakoca, Taşkuyucak District of Gölmarmara district of Manisa (Turkey), while plowing his field, thought...

Archaeologists Uncover Early Bronze Age Ceremonial Complex in Murayghat, Jordan

4 August 2025

4 August 2025

Archaeologists have uncovered striking evidence of an ancient ceremonial complex in Murayghat, Jordan, that could rewrite what we know about...

Negev desert archaeological site offers important clues about modern human origin

22 June 2021

22 June 2021

The archaeological excavation site at Boker Tachtit in Israel’s central Negev desert offers evidence to one of human history’s most...