21 November 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

Stone-arched tunnel discovered near Achaemenid dam in southern Iran

4 February 2022

4 February 2022

A cultural heritage protection team has recently discovered a stone-arched tunnel located near an Achaemenid embankment dam in southern Iran....

Puzzling rings may be finger loops from prehistoric weapon systems

24 May 2023

24 May 2023

When many researchers looked at an astonishing group of artifacts discovered at French archaeological sites, they presumed they were ornaments...

16 New Ancient Rock Art Sites Discovered In Jalapão, Brazil

13 March 2024

13 March 2024

Archaeologists at Brazil’s National Institute of Historical and Artistic Heritage (Iphan) discovered 16 new archaeological sites while surveying a large...

Ancient Rituals and ‘Devil’s Money’: Elite Pagans’ Medieval Cult Site Unearthed at Hezingen

15 February 2025

15 February 2025

Researchers in the eastern Netherlands have uncovered a medieval cult site featuring structural remains and a hoard of gold and...

Two statuettes of Demeter discovered in Aigai, the ‘city of goats’ of the Aeolians in western Türkiye

20 November 2023

20 November 2023

Two statuettes of Demeter, the Greek goddess of earth and fertility, were discovered in a cistern in the ancient city...

Over 1,600-yr-old tomb of embracing lovers found in north China

16 August 2021

16 August 2021

Archaeologists recently published a study of the tomb of cuddling lovers, dating to the Northern Wei Dynasty (386-534), more than...

Unexpected finds under the Tel Aviv Suburban

21 August 2021

21 August 2021

In preparation for a planned residential building project in suburban Tel Aviv, archaeologists from the Israel Antiquities Authority have begun...

3000 Years Old Bronze Age Settlement Unveiled Ahead of New Stadium Construction

27 July 2025

27 July 2025

Archaeologists have uncovered an expansive Late Bronze Age settlement in Wolmirstedt, Saxony-Anhalt, ahead of the construction of a new multimillion-euro...

Archaeologists Uncovered a Terracotta Commander and Warriors at the Mausoleum of China’s First Emperor

12 January 2025

12 January 2025

Archaeologists have unearthed a rare 2,000-year-old statue depicting a high-ranking military commander at the famous Terracotta Army site in China:...

In Lviv, Ukraine, a secret room where Jews were hiding in city sewers during the Nazi Holocaust has been unearthed

7 November 2021

7 November 2021

In the western Ukrainian city of Lviv, diggers have uncovered new hiding spots in underground sewers where some Jews managed...

Divine Punishment or Human Theft? 4,000-Year-Old Relief Missing from Egypt’s ‘Cursed’ Tomb

9 October 2025

9 October 2025

A haunting mystery is unfolding in Egypt’s Saqqara necropolis, where a 4,000-year-old limestone relief has vanished from one of the...

An 8,200-year-old temple structure found in Çatalhöyük

6 September 2022

6 September 2022

An 8,200-year-old temple structure was found during the 30th excavation season of the excavations at Çatalhöyük, one of the first...

One of the Oldest Tin-Bronze Knife in the Eurasian Steppe Discovered in a Unique Bronze Age Cemetery in Uygur ­Autonomous Region

29 January 2025

29 January 2025

Chinese archaeologists have recently uncovered a large and uniquely structured cemetery dating back to 2800-2600 BC, located about two kilometers...

2,700-year-old Unique Rock Tombs Disappear

18 July 2023

18 July 2023

The 2,700-year-old rock tombs, unique in Turkey, in the Taşköprü district of Kastamonu are in danger of extinction due to...

Declassified CIA Satellite Spy Program Reveals Lost Ancient Roman Forts

26 October 2023

26 October 2023

Archaeologists have discovered “massive” ancient Roman forts that redraw the borders of the ancient empire using images from a declassified...