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Elaborate 600-year-old castle — complete with moat — unearthed in France. Take a look

Archaeologists in Vannes unearthed the ruins of an elaborate castle and moat built in the 1380s by a duke and later abandoned, photos show.
Archaeologists in Vannes unearthed the ruins of an elaborate castle and moat built in the 1380s by a duke and later abandoned, photos show. Photo from Emmanuelle Collado and Inrap

Archaeologists had known for years that a hotel in Vannes, France, was built on the site of a medieval castle. The 18th century mansion-turned-hotel even named itself after the castle: the Château de l’Hermine.

What archaeologists didn’t know was how much of the 600-year-old castle was still around, buried just below the surface.

The excavations in the courtyard of the Château de l’Hermine hotel in Vannes began in February 2023 ahead of the construction of a museum, the French National Institute for Preventive Archaeological Research said in a March 26 news release.

About 10 feet down, archaeologists found the top of the castle ruins. The elaborate stone structure was built in the 1380s by the Duke of Brittany Jean IV to showcase his power, the institute said.

What remained of the 600-year-old castle was a testament to its elegance and significance.

The ancient castle’s moat after archaeologists excavated it.
The ancient castle’s moat after archaeologists excavated it. Photo from Rozenn Battais and Inrap

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Two floors of the structure had been partially preserved, archaeologists said. The larger ground floor stretched almost 140 feet in length and 55 feet in width.

Surrounding the fortress-like castle was a moat, which could only be crossed via a wooden bridge, archaeologists said. Excavations uncovered the ancient stone pier and fragments of the bridge.

A photo shows the sloped castle wall on one side and the smaller partially collapsed stone pier on the other side. A canal-like pit — now muddy and empty — separates the two structures.

The indoor toilets and pipes at the 600-year-old castle
The indoor toilets and pipes at the 600-year-old castle Photo from Rozenn Battais and Inrap

At one end, the castle ruins had indoor toilets with drainage pipes, the institute said. The arrangement of the pipes suggested the castle originally had three or four floors.

On the other side of the ancient building, archaeologists found the remnants of an integrated, water-powered mill. A photo shows the steps leading to the mill and the Tetris-block-shaped hole where the wheel once spun.

The ancient castle’s integrated water-powered mill.
The ancient castle’s integrated water-powered mill. Photo from Emmanuelle Collado and Inrap

Archaeologists also found several well-preserved staircases, including a ceremonial one, the equivalent of an ancient bay window seat and fragments of defensive towers.

Smaller artifacts such as coins, jewelry, cooking tools, bowls, knives and a padlock were found in the drain pipes and moat. Photos show a few of these artifacts.

Some of the artifacts found at the castle including a padlock (left) and a pair of knives (right)
Some of the artifacts found at the castle including a padlock (left) and a pair of knives (right) Photos from Emmanuelle Collado and Inrap

The ancient Château de l’Hermine castle was used for about a century before being abandoned in the 1470s, archaeologists said. The castle fell into disrepair and further ruin over the following centuries until it became the foundation for the 18th century mansion that still stands on the site today.

Aerial footage shared by the institute on YouTube shows what the area around the medieval castle looks like now.

An aerial view of the 600-year-old castle ruins in Vannes.
An aerial view of the 600-year-old castle ruins in Vannes. Screengrab from Inrap's YouTube video

Vannes is along the western coast of France and about 300 miles southwest of Paris.

Google Translate was used to translate the news release and article from the French National Institute for Preventive Archaeological Research (Inrap).

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This story was originally published March 26, 2024 at 5:05 PM with the headline "Elaborate 600-year-old castle — complete with moat — unearthed in France. Take a look."

Aspen Pflughoeft
McClatchy DC
Aspen Pflughoeft covers real-time news for McClatchy. She is a graduate of Minerva University where she studied communications, history, and international politics. Previously, she reported for Deseret News.
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