12 April 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

Bronze Age Petroglyphs discovered in Kazakhstan

1 May 2024

1 May 2024

Volunteers in Kazakhstan have discovered new petroglyphs from the Bronze Age. The rock carvings were found by volunteers of the...

The 1,000-year-old surgical kit found in Sican tomb, Peru

28 March 2022

28 March 2022

A set of surgical tools indicating that the deceased was a surgeon was found in a funerary bundle found in...

Was Stavanger Cathedral Built on a Viking Settlement?

4 June 2021

4 June 2021

Archaeologists have discovered animal bones and habitation evidence underneath the northern part of Stavanger cathedral that they believe date from...

New Elymaean Rock Carving in Iran Shows Possible Parallels with the Hercules–Hydra Motif Known from 325 BC Greek Coinage

21 December 2025

21 December 2025

A newly discovered Elymaean rock carving in southwest Iran is drawing significant scholarly attention for its unusual iconography and its...

Unique Heart-Shaped Jesuit Ring from 1700s at Fort St Joseph, Michigan

18 September 2022

18 September 2022

An archeology student from the Fort St. Joseph Archeology project at Western Michigan University has uncovered a unique heart-shaped Jesuit...

Khresis Mosaic Reveals the Hidden Wealth of Ancient Troy in Hatay

6 April 2026

6 April 2026

The Khresis Mosaic, one of the most remarkable archaeological discoveries in southern Türkiye, continues to draw attention for its historical...

Secrets of the Skull Room: 12 Ancient Human Skulls Unearthed in Sefertepe Excavations

16 September 2025

16 September 2025

Archaeologists have uncovered 12 new human skulls during ongoing excavations at Sefertepe, one of the most important sites of the...

A princely tomb discovered in the infrastructure project of the A7 Ploieşti-Buzău highway in Romania

20 December 2022

20 December 2022

An impressive archaeological discovery took place on the Ploiești-Buzău section of the Moldova Highway. The excavations uncovered a princely tomb,...

Britain’s First Discovery of Its Kind: A 2,000-Year-Old Carnyx and Boar Standard Unearthed in Norfolk

7 January 2026

7 January 2026

A groundbreaking archaeological discovery in Norfolk has revealed one of the most complete Iron Age war trumpets ever found in...

Archaeologists in the Tangier Peninsula Discovered Three Ancient Cemeteries, Including a Stone Burial Dating to Around 4,000 Years Ago

17 May 2025

17 May 2025

A significant archaeological discovery in northern Morocco’s Tangier Peninsula, situated just south of the Strait of Gibraltar, has led to...

1700-year-old Roman shoes and craft district found in France

3 June 2023

3 June 2023

An ancient Roman craft district was discovered by archaeologists working in the southwest of the town of Therouanne near a...

The Myth Behind Homay: New Study Reveals Ancient Links Between Turkic Mother Spirit Umay and Korean Mother Goddesses

5 February 2026

5 February 2026

Across continents and thousands of years, two ancient mythological figures—one rooted in the Korean Peninsula, the other spanning the vast...

Cristești Excavation Reveals Rare Roman Cemetery with Mass Child Grave and Military Connections

2 April 2026

2 April 2026

A significant archaeological discovery in Cristești, Mureș County, in central Romania, is offering fresh insight into life—and death—in the Roman...

The DNA of 4000-years-old hazelnut shells found in Kültepe

11 November 2023

11 November 2023

Excavations conducted ten years ago at the archaeological site of Kültepe Kanesh Karum, which dates back 6,000 years and is...

New evidence for the use of lions during executions in Roman Britain

9 August 2021

9 August 2021

Archaeologists have discovered an elaborate key as proof that wild animals were employed as execution vehicles in public arena events...