14 March 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

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...

5,000-Year-Old public eating space with food still inside discovered in ancient Lagash

2 February 2023

2 February 2023

Archaeologists have unearthed the remains of a public eating space that’s nearly 5,000 years old in southern Iraq, the University...

Night Sting Operation Leads to 2,000-Year-Old Discovery in Jerusalem

20 February 2026

20 February 2026

A dramatic anti-looting operation in Jerusalem has led to an unexpected archaeological breakthrough: the discovery of a large stone vessel...

3500-year-old ceramic oven discovered in Turkey’s Tepecik Mound

24 August 2021

24 August 2021

A 3,500-year-old ceramic oven was unearthed in Tepecik Mound in the Çine district of Aydın, in western Turkey. Tepecik Höyük,...

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...

New Neolithic structure unearthed at Tas-Silġ in Malta

8 October 2021

8 October 2021

Archaeologists excavating at Tas-Silġ in Marsaxlokk have discovered the remains of another Neolithic structure, Heritage Malta said. The discovery substantially...

5,000-Year-Old Mysterious Ritual Pits Unearthed in Germany Reveal Burned Homes, Dog Sacrifices, and Human Skulls

1 August 2025

1 August 2025

Archaeologists uncover over 5,000-year-old ritual pits filled with burned structures, dog remains, and human skulls in Saxony-Anhalt, suggesting complex ceremonies...

In northern Iran, a hand-dug passageway was discovered used for military purposes during the Qajar era

1 August 2021

1 August 2021

A hand-dug underground passage dating from the Qajar era (1794-1925), once believed to have served military purposes, has been discovered...

Hidden Inscriptions Discovered on Paris’ Luxor Obelisk

1 May 2025

1 May 2025

Nearly two centuries after its prominent placement in Paris’ Place de la Concorde, the 3,300-year-old Luxor Obelisk continues to yield...

Tajik Buddha in Nirvana – the Largest in the World: 42 feet long and 9 feet high

31 December 2023

31 December 2023

In the past, while Taliban soldiers in Afghanistan destroyed two immense statues of Buddha, art historians in neighboring Tajikistan meticulously...

Unprecedented 1800-year-old marble bathtub recovered in Turkey

23 April 2022

23 April 2022

The 1800-year-old marble bathtub, which was seized when it was about to be sold by historical artifact smugglers in Aydın’s...

3,500-Year-Old Rice Discovery Marks Longest Early Ocean Journey

24 July 2025

24 July 2025

Breakthrough research reveals ancient rice remains in Guam, offering insight into early Austronesian culture and a remarkable 2,300-kilometer early ocean...

Romanian Police Find the Stolen Viking Helmet

21 February 2021

21 February 2021

Romanian police specializing in heritage crimes recovered a medieval helmet of “Viking origin” on February 7, which had disappeared a...

One of the earliest water channels in history dating back 8,200 years was discovered in western Türkiye

27 August 2023

27 August 2023

One of the earliest water channels in history dating back 8,200 years was found during the excavation work carried out...

Rich Bronze Age Chamber Tombs Preserved for Over 3,000 Years Discovered at Cyprus’ Ancient Trade Hub Hala Sultan Tekke

2 February 2026

2 February 2026

New archaeological discoveries at Hala Sultan Tekke, one of the most important harbor cities of the Late Bronze Age, are...