Carnac

Carnac is firmly on the map for its astonishing and almost other-worldly collection of megalithic sites. Predating Stonehenge by around 100 years, Carnac (Garnag in Breton) tops it with the sheer number of ancient sites found in the vicinity, making this the world's greatest concentration of megalithic sites. There are no fewer than 3000 of these upright stones erected between 5000 and 3500 BC.