11 October 2025 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

Unlocking the Secrets of Jersey’s Le Câtillon II: A Celtic Settlement Discovered Near the Enigmatic Hoard

12 March 2025

12 March 2025

Recent archaeological investigations near Jersey, an island in the English Channel situated just off the coast of France, have unveiled...

The 4,500-year-old Wisconsin canoe was built around the same time that Stonehenge was being constructed

31 May 2024

31 May 2024

Historians from Wisconsin have reported the amazing finding of at least eleven prehistoric canoes in Lake Mendota, which is close...

4,500-Year-Old Dog Teeth-Adorned Bags Found in Germany May Have Been Elite Baby Carriers

11 July 2025

11 July 2025

Archaeological excavations near Krauschwitz reveal rare decorated leather bags buried with women and infants—shining new light on Neolithic burial customs...

The 8,000-year-old Aslantepe in Turkey has been added to the UNESCO World Heritage List

26 July 2021

26 July 2021

The Turkish Foreign Ministry said Monday that a rich, 30-meter-high archaeological mound going back 8,000 years in southern Turkey has...

Italian Versailles being returned to its former glory through

17 May 2023

17 May 2023

The Italian Royal Palace of Caserta, a long-neglected near Naples, is being restored to its former glory through a vast...

Archaeologists Uncover Asini’s Hidden Ancient Port Beneath the Waves of Greece

11 March 2025

11 March 2025

An international team of underwater archaeologists has made a groundbreaking discovery at the submerged site of Asini, near Tolo in...

A woman was buried in a canoe on her way to the ‘destination of souls’ 800 years ago

25 August 2022

25 August 2022

According to new research, Up to 800 years ago, mourners buried a young woman in a ceremonial canoe to represent...

Europe’s Oldest Megalithic Alignments Dated with Unprecedented Precision

28 June 2025

28 June 2025

New research reveals that the Carnac alignments in Brittany may be Europe’s oldest megalithic monuments, pushing back the timeline of...

No Ancient Super-Highway: The Reality of Europe’s Erdstall and the Scotland-Türkiye Tunnel

28 April 2025

28 April 2025

The internet continues to buzz with the captivating notion of an immense, prehistoric tunnel network stretching from the Scottish Highlands,...

Temple of Zeus Lepsynos in Turkey regains its glory

9 May 2022

9 May 2022

The temple of Zeus in the ancient city of Euromos in southwestern Turkey regains its original splendor with the revitalization...

A Rare Bilingual Inscription Discovered in Saudi Arabia’s Tabuk Province

28 June 2024

28 June 2024

Saudi Arabia’s Heritage Commission announced the discovery of a rare bilingual inscription in the village of Alqan in the Tabuk...

New suspect in greatest act of vandalism in the history of dinosaur study

29 May 2023

29 May 2023

Researchers from the University of Bristol are rewriting the history of paleontology’s darkest and most bizarre event. Vandals with sledgehammers...

Sicilian Seas Yield Rare Roman Helmet from 241 BC Naval Clash

5 September 2025

5 September 2025

In a remarkable underwater archaeological recovery that highlights Sicily’s rich cultural heritage, a bronze Montefortino‐type helmet was retrieved from the...

Pendants and beads reveal nine European Cultures living across the continent 30,000 years ago

1 February 2024

1 February 2024

In a new study, researchers have constructed a continent-wide database of personal ornaments worn by Europeans 34,000-24,000 years ago, a...

Name of Iranian city identified on 1800-year-old Sassanid clay seal

9 April 2024

9 April 2024

In a stunning archaeological find, the name “Shiraz” was identified on a clay sealing from the Sassanid era written in...