Le Tunnel de la Collonge: Ambierle, France

In the cheese world, affinage, or the art of aging and maturing cheese, is a whole separate genius. Fromagerie Mons, in Roanne, France, is at the top of the game, supplying perfectly aged cheese to the world’s best restaurants. Beginning in March, travelers can witness the aging process in a most alluring way, by venturing to the tiny town of Ambierle to spy the innovative aging tunnel the affineurs constructed in 2009. The entire operation is tucked inside an abandoned railway tunnel. Filled with shelves and shelves of the finest cheeses in the world, one imagines that if Willy Wonka had had an affection for dairy, not candy, Le Tunnel de la Collonge would have been his headquarters. 42820 Ambierle; mons-fromages.com.