11 January 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

Ancient gypsum furniture was discovered in a fire temple in the ancient region of Vigol in Iran

1 June 2021

1 June 2021

Sets of gypsum furniture, including a carved table and chairs, were discovered during an archaeological dig in central Iran. According...

DNA Elucidates Mysteries of the Iron Age Log Coffin Culture in Thailand

9 February 2024

9 February 2024

The Northwestern Thailand highlands region of Pang Mapha is dotted with dozens of caves that contain some incredibly odd prehistoric...

The First Dinosaurs Discovered in Japan From the Late Cretaceous Period

30 April 2021

30 April 2021

Yamatosaurus Izanagii, a new genus, and species of hadrosaur or duck-billed dinosaur have been discovered on one of Japan’s southern...

An ancient “fridge” have uncovered at the Roman legionary fortress of Novae, Bulgaria

30 September 2022

30 September 2022

Polish archaeologists, during excavations at the Roman legionnaires’ camp in Novae, discovered a container that could be described as an...

An unknown human group is revealed in a 7,200-year-old skeleton discovered in Indonesia

27 August 2021

27 August 2021

According to a study released this week, archaeologists uncovered the bones of a 7,200-year-old skeleton from a female hunter-gatherer in...

2000-years-old Hercules Rock Relief is being Vandalized

17 February 2024

17 February 2024

The 2000-year-old Hercules Rock Relief, located in Deliktaş, approximately 2.5 kilometers northeast of the Iznik district center of Bursa, is...

A 1900-year-old stele was discovered in Turkey’s ancient city of Parion

5 August 2021

5 August 2021

A 1,900-year-old grave stele was found during excavations in Parion, an important ancient port city, near Kemer village in the...

A mosaic made by the freed slave to thank God was found in the church excavation

10 January 2022

10 January 2022

During the season excavation of the 6th-century Holy Apostles Church, located in an orange grove in the Arsuz district of...

700-Year-Old Church Becomes a Museum

31 January 2021

31 January 2021

It was learned that the 7-century-old church in Akçaabat, Trabzon will serve as a museum from now on. St. The...

Archaeologists discovered the monastery of Queen Cynethryth, a strong Anglo-Saxon queen

19 August 2021

19 August 2021

Archaeologists from the University of Reading and local volunteers excavating on the grounds of Holy Trinity Church have made an...

A Rare Design in Roman Military Architecture: Triangular Stone Tower Discovered Near Sofia

22 July 2025

22 July 2025

Bulgarian archaeologists have uncovered a triangular stone tower — a rare architectural form in Roman military design — at the...

13th-Century skeletons Unearthed in Annaea Mound

8 May 2021

8 May 2021

At the historical Kadıkalesi archaeological site in Turkey’s western Aydin province’s Kuşadası district, a total of five skeletons thought to...

Archaeologists identified the first known tomb of a Warrior Woman with weapons in Hungary

5 January 2025

5 January 2025

A team of archaeologists led by Balázs Tihanyi of the Department of Biological Anthropology and the Department of Archaeology at...

Gürcütepe’s 9,000-Year-Old Figurines Offer Rare Clues to Life After Taş Tepeler’s Monumental Age

11 December 2025

11 December 2025

Just southeast of Şanlıurfa, on the northwestern edge of the vast Harran Plain, a small but exceptionally informative archaeological site...

Archaeologists made a remarkable discovery in Kosovo: Evidence that the great Byzantine Emperor was of Dardanian origin

19 August 2023

19 August 2023

A mixed team of international and local experts led by Professor Christophe J. Goddard has unearthed a monumental inscription of...