Situated between Pallars Sobirà and Alt Urgell, the Alt Pirineu Natural Park is the largest in Catalonia. Pernui, in the district of Sort, is the gateway to this park.
The park is home to a large number of protected species, both animals as well as plant, and it has a variety of landscapes from Mediterranean forests to alpine flora. The village of Alins offers the possibility of admiring one of the many peculiar trees of the area due to its age or its size: the Pla de la Selva Fir, a tree catalogued as a Natural Monument.
Of note in the landscape is the Glacial Lake of Certascan, the largest in the Pyrenees, and the Cigalera de l'obaga de Baleran, one of the deepest gorges in Catalonia. However, perhaps the most famous is the Pica d'Estats, the highest peak in Catalonia, which has become an authentic symbol. It is said that Jacint Verdaguer was the first Catalan to climb it.
The park also includes several towns and villages belonging to up to fifteen districts, where an interesting cultural heritage can be enjoyed, both at an architectural as well as an archaeological level in addition to works of sacred art. Visitors can also participate in the fiestas and traditions, some from ancient times.
Currently there are a series of cross-border itineraries, along the GR-11, and for more experienced mountaineers, the Pyrenean Haute Route.
Its offices are in Llavorsí, where the centre in the Paller de l'Antonet can be visited, which offers information and organises exhibitions and workshops.