The Maison des Mégalithes, located at the northern entrance to the Kermario alignments on the Route des Alignements in Carnac, Morbihan, serves as the primary interpretive centre for the largest concentration of megalithic monuments in the world. The Carnac alignments consist of more than 3,000 standing stones — menhirs — arranged in parallel rows extending across several kilometres of the Breton landscape. Erected between approximately 5000 and 3000 BCE during the Neolithic and early Chalcolithic periods, their precise function remains debated, with leading theories proposing astronomical calendaring, processional ritual, or territorial demarcation.
The visitor centre houses a permanent exhibition dedicated to the prehistory of the Morbihan department and the megalithic culture of the Carnac basin. Scale models of the three major alignment groups — Ménec, Kermario, and Kerlescan — allow visitors to appreciate the spatial logic of the monuments before venturing into the field. Archaeological finds recovered from surrounding tumuli and dolmens, including polished stone axes, ceramic vessels, and personal ornaments, are displayed alongside contextual panels explaining Neolithic lifeways, burial customs, and landscape use.
Access to the alignments themselves is managed from the Maison des Mégalithes. For conservation reasons, free movement among the stones is restricted outside winter months; supervised visits and guided tours depart from the centre's forecourt. The building was purpose-built in 1986 and renovated in 2014 to add improved display cases and updated interpretation.
The site and its associated megalithic zones are protected as a classified monument historique and are under consideration for UNESCO World Heritage designation. The Centre des Monuments Nationaux administers the Maison des Mégalithes and maintains the seasonal access protocols that protect the fragile heathland substrate around the stones.
| Admission | Free (entry to the guided tours is charged separately) |
|---|---|
| Address | Route des Alignements, 56340 Carnac |
Location
Route des Alignements, 56340 Carnac
Highlights
- Scale models of all three major alignment groups — Ménec, Kermario, and Kerlescan — providing spatial context before visiting the field
- Neolithic artefacts including polished stone axes, ceramics, and personal ornaments recovered from surrounding tumuli
- Guided access to the Kermario alignment from the centre's forecourt, with expert commentary in season
- Contextual panels on Neolithic burial customs, lifeways, and competing theories behind the alignment function
- Bookshop specialising in prehistoric Brittany with titles in French and English
Tips for visiting
- Guided tours of the alignments depart from the Maison des Mégalithes; book ahead in July and August when places fill quickly
- Visit early morning to see the stones in low-angle light and avoid coach parties
- Entry to the visitor centre is free; guided tours of the alignment interior are charged separately
- Winter months (November to March) offer unrestricted access to walk among the stones without a guide
- Wear sturdy footwear; the heathland paths between the stones are uneven and often wet in spring and autumn
- The Tumulus de Kercado, a chambered tomb dating to around 4700 BCE, can be reached on foot from the car park
Accessibility
The Maison des Mégalithes visitor centre is step-free at ground level. The alignment paths are unpaved heathland tracks and are not suitable for wheelchairs or visitors with significant mobility impairments. A viewing platform near the car park provides a partial view of the Kermario rows without entering the alignment field.
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Frequently asked questions
Is the site English-language friendly?
Guided tours are primarily in French, though English-language tours are offered during the summer season. The visitor centre's interpretation panels include English translations.
How long does a full visit take?
Allow one to two hours for the visitor centre and a guided tour of the alignments. Visiting the Ménec and Kerlescan groups as well can occupy a full half-day.
Can visitors bring children?
Yes. The outdoor environment suits children well, and the scale models in the visitor centre engage younger visitors. The heathland terrain is manageable for most ages.
Why are the alignments fenced off?
The heathland around the stones is fragile, and unrestricted foot traffic caused significant erosion. Seasonal access controls introduced in the 1990s have stabilised the vegetation cover around the monuments.