Museum
ArchéoMusée Coriosolis
Corseul · Côtes-d’Armor
In Corseul, the former capital of the Coriosolites, a museum fully renewed in 2026 to understand the Roman city through excavated objects, models, interactive displays and virtual reality. Three major archaeological sites complete the visit.
- Suggested time
- 1 h 30 for the museum, 3 hours to half a day with the three ArchéoSites
- Type of place
- Gallo-Roman archaeology museum and interpretation centre
- Atmosphere
- Fun and educational in the museum, then archaeological and peaceful in the streets and countryside of Corseul
- Getting there
- 18 rue César Mulon, in the village of Corseul, about 10 km from Dinan. The Clos Mulon is right opposite the museum, and Monterfil can be reached on foot in the village. The Temple of Mars is about 3 km away and is easier to reach by car or bike. Parking near the museum, with reserved disabled spaces nearby. Dinamo bus line B stops nearby; check the times before relying only on public transport.
Who this place suits
- With family
- 10/10
- As a couple
- 8/10
- With friends
- 8/10
- Solo
- 9/10
- With a dog
- 1/10
- Reduced mobility
- 9/10
These scores are calculated from what the page records: official rating, facilities, difficulty, duration and location. They are a guide, not a substitute for contacting the venue, especially about accessibility.
About
The ArchéoMusée Coriosolis is the ideal gateway to understanding Corseul, one of the main ancient towns in Brittany. Now a small village in the Côtes-d’Armor, Corseul was in Antiquity the capital of the Coriosolites, a Gaulish people whose territory covered a large part of north-eastern Brittany. The Roman town grew from the end of the 1st century BC and became an important administrative, religious, craft and trading centre. The museum occupies a former state school in the village, right opposite the Clos Mulon archaeological site. A first archaeological museum was set up in Corseul town hall in 1977. Coriosolis opened as an interpretation centre in 2014, before gradually focusing on the ancient heritage of Corseul and Dinan Agglomération. After closing for works from November 2025, the ArchéoMusée reopened on 4 July 2026 with a fully renewed route. The new design is organised into three large immersive spaces: the city in the Roman Empire, the town and the house. Objects from the excavations sit alongside models, illustrations, hands-on displays and digital tools. Three focus areas also explain how archaeologists work, from surveying and excavation to analysing and interpreting finds. The collections tell much more than the story of the great monuments. Ceramics, architectural features and everyday objects cover housing, food, grooming, crafts, trade, art and religion. The museum works especially well before you go to see the remains: the ground-level walls you meet outside become much easier to read once you have seen the reconstructions and models. The most spectacular experience is devoted to the Haut-Bécherel sanctuary, traditionally called the Temple of Mars. A virtual reality headset lets you follow Lelius, a young 2nd-century Coriosolite, during a ceremony in the sanctuary, reconstructed in 360 degrees. On the real site, the free Temple de Mars 3D app uses augmented reality to bring the building back to life in front of the ruins. So the visit does not stop at the museum doors. Three ArchéoSites let you find the Roman town in today’s landscape: the Clos Mulon just opposite, the Monterfil trading quarter in the village and the Haut-Bécherel sanctuary, about 3 kilometres away. The latter, listed as a historic monument as early as 1840, was one of the largest Gallo-Roman sanctuaries in Brittany. Its surviving ancient wall still stands about 10 metres high. Together, the museum and the outdoor sites make Corseul a particularly complete visit for understanding a town of Roman Gaul.
What you will see
- A new permanent route, completely redesigned and reopened on 4 July 2026.
- Three large immersive spaces: the city in the Roman Empire, the town and the house.
- Objects found during the Corseul excavations, with models, illustrations and interactive displays.
- Three focus areas to understand the archaeologist’s job, from surveying to studying objects after the dig.
- A 360-degree virtual reality immersion in the Temple of Mars in the 2nd century.
- The Clos Mulon right opposite the museum, with the remains of a rich ancient residential complex.
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- The Monterfil quarter, where streets, buildings, shops and workshops reveal the layout of the Roman town.
- The Temple of Mars at Haut-Bécherel, one of the main surviving Roman religious complexes in Brittany.
- The free Temple de Mars 3D app, which brings the ancient sanctuary back to life on site in augmented reality.
- A museum with the Tourisme & Handicap label for motor, hearing, visual and mental disabilities.
Practical information
- Address
- 18 rue César Mulon, 22130 Corseul
- Public transport
- Dinamo bus line B stops nearby
- Parking
- Near the museum, with reserved disabled spaces nearby
- Pets
- Not allowed in the ArchéoMusée
- Accessibility
- Accessible to people with motor, hearing, mental and visual disabilities, with an access ramp, adapted toilets, disabled parking nearby, an induction loop, tactile maps and multisensory displays; Tourisme & Handicap label renewed in 2024
- Best time
- July and August for the longest opening hours and activities; September and October for a calmer visit of the museum and the outdoor sites
Tips on the spot
- Until 1 November 2026, the museum is open Tuesday to Friday and on Sundays from 2 pm to 6 pm. It is closed on Mondays and Saturdays.
- In July and August 2026, it was open Tuesday to Sunday from 10 am to 1 pm and from 2 pm to 6 pm.
- 2026 prices: €5 full price, €3 reduced, free for under-7s. The annual pass costs €8.
- Guided tours may cost €1 extra and MicroAteliers €1 to €2 extra, depending on the programme.
- Start with the museum before the outdoor sites: the models and reconstructions make the remains of the Clos Mulon and Monterfil much easier to read.
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- The Clos Mulon is just opposite: cross the street to see the site before you leave.
- Keep Monterfil for a walk in the village, then take the car or bike to the Temple of Mars, about 3 km away.
- Download the free Temple de Mars 3D app before heading to the sanctuary, especially if your mobile signal is weak.
- Virtual reality at the Temple of Mars depends on equipment and available places: ask at reception when you arrive.
- Until 5 March 2027, the Super-archéologues ! exhibition presents five archaeology specialities through objects and interactive games.
- The museum is particularly suited to children, with models, hands-on displays and digital tools. The MicroAteliers during school holidays add a short, practical activity.
- Pets are not allowed in the ArchéoMusée. The outdoor site of the Temple of Mars can be visited separately.
- For a real visit of ancient Corseul, allow half a day: the museum alone shows only part of the experience.
Frequently asked questions
What is the ArchéoMusée Coriosolis?
It is the archaeology museum of Corseul, the former Roman capital of the Coriosolites. It presents objects from the excavations, the layout of the ancient town and the daily life of its inhabitants.
Has the museum been renovated recently?
Yes. It closed in November 2025 for a complete redesign and reopened on 4 July 2026 with a new permanent route.
What are the opening hours in autumn 2026?
From 1 September to 1 November 2026, the museum is open Tuesday to Friday and on Sundays from 2 pm to 6 pm. It is closed on Mondays and Saturdays.
How much does entry cost?
In 2026, €5 full price and €3 reduced. Entry is free for children under 7. The annual pass costs €8.
Can I visit the Temple of Mars from the museum?
Yes, but it is about 3 km from the museum. It is best reached by car or bike after visiting Coriosolis.
Which temporary exhibition is on?
Super-archéologues !, from 4 July 2026 to 5 March 2027. It introduces five specialist archaeology jobs through objects and interactive games.
See also all the museums in Côtes-d’Armor.
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