La Grotte de Pair Non Pair
Bourg's version of Lascaux, this remarkable Paleolithic-era cave, covered with lifelike etchings of mammoths, ibexes, bulls and horses, was discovered by a local archeologist 60 years before its more famous cousin, but here you'll be visiting the real deal. Book in advance, as you're only allowed to visit as part of an hour-long guided tour, which is limited to 18 people at a time.
