Located in the middle of the Pyrenees mountain range, between Pallars Sobirà, Val d'Aran and Alta Ribagorza, it is the only national park in Catalonia and the centre of a large Protected Natural Area with more than 200 lakes. Water is the main protagonist, with numerous rivers, ravines and wetlands which, together with the richness and majesty of its landscapes, flora and fauna, make it the most genuine representation of the high mountains. Los Encantats is one of the most emblematic peaks formed by metamorphic limestone originated from the transformation of sedimentary rocks due to the temperature and pressure conditions to which they were subjected by the glaciers. Currently, the only traditional and age-old use is the maintenance of extensive livestock farming by the local cattle of Boí and Espot. The Park receives more than half a million visitors every year: one of its main objectives is to make people's access compatible with the full conservation of all its natural values. This objective is impossible to achieve without the effective involvement of all its visitors. For this reason, their collaboration and respect for the established protection regulations is very important.

The Alt Pirineu Natural Park, declared in 2003, is the largest protected natural area in Catalonia, with a surface area of almost 80,000 ha. Beneath the highest peak of the Catalan Pyrenees, the Pica d'Estats (3,143 m), this unique territory is a reserve of Pyrenean natural and cultural heritage. It stands out for its extensive pastures maintained by the action of livestock and emblematic animals such as the capercaillie, the bearded vulture and the brown bear. The Alt Pirineu Natural Park offers a wide range of options for ecotourism all year round: discover magnificent high mountain lakes, enjoy the burst of spring flowers or the colours of autumn on historic trails, visit museums that show the present and past way of life of the inhabitants of a mountain territory, breathe in the solitude of the winter mountain landscape on snowshoe trails, or enjoy spectacular panoramic views from a belvedere. To access the interior of the area you must travel along mountain roads or unpaved forest tracks, for which you must use a private vehicle (preferably with a high chassis) or, if you prefer public transport, local all-terrain taxis. Alternatively, it is recommended to access the Park on foot or by mountain bike, using the extensive network of existing trails that often start in the surrounding villages.

Les Valls d' Àneu is a natural sub-region situated in the northwest of Pallars Sobirà, a charming high mountain region, located in the north of Pallars Sobirà, with stone and slate villages and peaks that touch the sky. It is composed by the municipalities of Alt Àneu, Esterri d'Àneu, la Guingueta d'Àneu and Espot. It is bordered to the west by the Aran Valley, to the north by France, to the east by the Cardós Valley and to the south by Llavorsí. The river Noguera Pallaresa crosses the whole valley and is the most important fluvial artery in the area. Esterri is the nerve centre, both because it is a commercial centre and because it is the place where the main valleys converge: the Isil valley, the Unarre valley and the Bonaigua valley. In the town of Espot we find one of the entrances to the Aigüestortes and Sant Maurici Lake National Park.