7 February 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

One-of-a-kind 1000- years-old gold earring found in Denmark

13 December 2021

13 December 2021

A metal detectorist in Denmark uncovered a one-of-a-kind piece of 11th-century gold jewelry that had never been seen in Scandinavia...

Fingerprints Found on Orkney Pottery Belong to Young Men

14 June 2021

14 June 2021

Details of the two young guys whose fingerprints were discovered on a fragment of a clay pot dating back over...

Saudi shipwreck excavation reveals hundreds of 18th-century artifacts on sunken ship in the north Red Sea

25 February 2022

25 February 2022

Divers from Saudi Arabia’s Heritage Authority have discovered a shipwreck in the Red Sea from the 18th century filled with...

“Land of the Thousand Temples” Kancheepuram in India

20 May 2021

20 May 2021

Kancheepuram, one of the most sacred and religious Hindu pilgrim centers in India is also called the ‘Land of the...

Women May Have Ruled El Algar in the Bronze Age

12 March 2021

12 March 2021

The diadem found in the Bronze Age tomb belonging to the El Algar culture may have belonged to a queen....

Early humans appreciated geometry and symmetry and were intentionally crafting spherical shapes 1.4 million years ago, according to a new study

7 September 2023

7 September 2023

An examination of 150 round, baseball-sized stones discovered at a site where early humans lived 1.4 million years ago shows...

Sicily: Archaeologists make striking discovery in Segesta

8 June 2021

8 June 2021

Archaeological excavations in the Segesta Archaeological Park, investigating a “monumental edifice” near the portico at the end of the old...

7,000-Year-Old Animal-Figured Seals Found in Arslantepe, Anatolia’s First City-State

27 August 2024

27 August 2024

Archaeologists working at the Arslantepe Mound (Turkish: Arslantepe Höyük), a UNESCO World Heritage Site in Türkiye’s eastern Malatya province and...

1,800-year-old Bronze military medal with Medusa head found in southeastern Turkey

5 October 2022

5 October 2022

A military medal believed to be almost 1,800 years old has been found by archaeologists in Turkey. The discovery was...

Archaeologists find remains of Norman Bridge during dig in Chichester’s Priory Park, England

1 June 2024

1 June 2024

During an excavation in West Sussex, England, archaeologists uncovered the remains of a military causeway, or bridge, that led to...

Excavations at a 4th millennium BC settlement uncover evidence for the emergence and rejection of the earliest state institutions in Iraq

6 December 2024

6 December 2024

New excavations of the 4th-millennium B.C settlement at the archaeological site of Shakhi Kora, located in the Iraqi Kurdistan region...

Archaeologists Unearth Rare 9,000-Year-Old Stone Age Hammer in Norway

4 October 2025

4 October 2025

Archaeologists in Norway have uncovered a rare and fascinating piece of history: a 9,000-year-old hammer dating back to the Stone...

Sacred Sanctuary of Phrygian Mother Goddess Matar Unearthed in Attouda Ancient City

2 October 2025

2 October 2025

A groundbreaking archaeological discovery has been made in Attouda Ancient City, located in the Sarayköy district of Denizli, Turkey. Excavations...

Petra’s Hidden Engineering: Rare 116-Meter Lead Pipeline Discovered in Nabataean Aqueduct System

7 February 2026

7 February 2026

In the rose-red cliffs of Petra, water was never just a necessity. It was power, prestige—and engineering brilliance carved directly...

Ancient rituals recorded on 2,000-year-old bamboo slips deciphered

18 December 2023

18 December 2023

Scholars of China’s Tsinghua University have deciphered five documents recorded on bamboo slips dating back to the Warring States period...