The Lousal Mine is part of the Iberian Pyrite Belt, one of the most important metallogenetic provinces in the world resulting from volcanic and hydrothermal activity with 350 million years. This region, about 250 km of length and 30-50 km width, extends from the Sado Valley (Portugal) to the Province of Seville (Spain). The Lousal Mine, located in the municipality of Grândola (Setúbal), explored pyrite between 1900 and 1988. After a process of social, economic, environmental and heritage rehabilitation, Lousal Mine became an open air museum where the visitors can explore science, extract knowledge and value the past while projecting the future.