Blegny Mine, a significant relic of the industrial past, is nestled in Trembleur, near Liège, Belgium. It stands as a testament to the region's coal mining history and has been preserved as an industrial heritage site and show mine. Visitors can explore the underground galleries through the original shaft, delving 30 to 60 meters below the surface to witness the coal extraction process firsthand. This site is not only a museum but also part of the European Route of Industrial Heritage and has been recognized by UNESCO as a World Heritage Site, highlighting its global cultural importance.