It is a former coal mining town, three miles northwest of the centre of Lens. The two largest (184 m & 182 m) spoil heaps in Europe are in Loos-en-Gohelle, those of pits 11 and 19, and are visible for miles around. They are part of the mines of the Nord-Pas de Calais region that have become the 38th French site on the list of UNESCO World Heritage Sites as "a living and changing landscape".[4]