Carnac
Nobody knows why the standing stones at Carnac were arranged the way they were. Over 3,000 stones, some weighing several tonnes, placed in parallel rows stretching for kilometres across the landscape of southern Brittany by Neolithic communities around 3300 BCE. Theories range from astronomical alignment to ceremonial processional routes to territorial markers. The honest position is that the function remains genuinely unclear. The stones are still there.
The Alignments
Three main groups of standing stones are the primary visit. The Alignements du Ménec are the largest: approximately 1,099 stones in eleven parallel rows stretching 1.2 kilometres, with a dolmen at the eastern end. The Alignements de Kermario have around 1,029 stones and include a menhir (single standing stone) that reaches 6 metres. The Alignements de Kerlescan to the east have about 540 stones and see fewer visitors; the quieter atmosphere there is worth the extra drive.
Access to the stones is managed by the Maison des Mégalithes visitor centre near the Ménec alignment. From July through September, independent access to the alignments is restricted during the day to prevent erosion damage; guided tours run several times daily. Outside summer, you can walk freely among the stones. The visitor centre has good explanatory materials and is the right place to start before seeing any of the sites. Entry is around EUR 7 per adult.
The stones are most striking in low-angle light: early morning or late afternoon when the shadows emphasise the scale and the rows of stones disappear toward the horizon.
The Wider Area
The Carnac region has dozens of smaller megalithic monuments beyond the famous alignments: the tumulus of Saint-Michel (a large barrow mound with an interior accessible by guided tour), dolmens (portal tombs) scattered through the surrounding farmland, and several menhirs standing in agricultural fields. A hire car lets you explore these properly; they are not all signposted and most visitors miss them entirely.
Locmariaquer, 12 kilometres east, has the Grand Menhir Brisé, the largest menhir ever erected in Europe (fallen and broken into four pieces, originally about 20 metres tall and weighing 280 tonnes), alongside other megalithic monuments. Entry around EUR 7.
Eating
Brittany’s specific culinary identity: galettes (buckwheat crepes with savoury fillings) and cidre (Breton cider poured from ceramic bowls) are the regional default at any crêperie. The seafood from the Gulf of Morbihan is very good; freshly caught oysters at a belon producer direct from the water is the best use of proximity to the coast.
Getting There
Carnac is about 500 kilometres from Paris, roughly five hours by car or a TGV from Paris to Auray (2.5 hours) plus 15 kilometres by bus or taxi. Having a car matters for exploring the wider megalithic landscape beyond the main alignments.