The Major Mining Sites of Wallonia, recognized as a UNESCO World Heritage Site, are a testament to Belgium's rich industrial heritage. These sites, including Le Grand-Hornu, Bois-du-Luc, Bois du Cazier, and Blegny-Mine, offer a glimpse into the coal mining industry that fueled the European Industrial Revolution. Visitors can explore the preserved mining complexes and learn about the workers' lives, technological advancements, and the social history of the region during the 19th and 20th centuries.