efe-epaGuérande, France

The region of Guérande in western France has long been known for its salt-producing marshes but in recent years its commitment to environmental and high-quality production devoid of chemicals has catapulted its salt to gastronomic fame.

The vast salt lakes on the Atlantic coast produce some 10,000 tons of the mineral every year in a precise operation that is overseen by around 330 workers.