In the middle of the XVIII and beginning of the XIX century, the Nalón Valley was immersed in an authentic Industrial Revolution. This transformed not only the face of the Valley, but also its way of life and its inhabitants right up to this day.
Coal mining and iron and steel production, together with the development of the railways, were the basic pillars for this industrialisation process.
In Langreo, Laviana and San Martín del Rey Aurelio we find an unending list of examples of the industrial richness of the Valley, such as the mineshafts, pitheads, winding towers, old railway lines, iron bridges, etcetera.
Maintains a valuable industrial heritage that has lead to an intense industrialisation.
Traditional mining town that has modern urban areas.