The Pyrenean Monte Perdido was declared a World Heritage site by UNESCO in 1997 for its wealth of culture and nature. This cross border territory includes the municipalities of Torla, Fanlo, Tella-Sin, Puértolas, Bielsa and Broto, on the Spanish side, and the valleys of Gèdre and Gavarnie on the French side. The Ordesa and Monte Perdido National Park and the Parc National des Pyrénées both contribute to this heritage site.
UNESCO highlights its geological formations, its deep canyons and spectacular circuses, as well as its lakes, caves, mountains and forests. But above all, it acknowledges its exceptional cultural value combining a unique natural setting with a way of life particular to mountain areas ever rarer in Europe.