The Ecomuseum of Valls d'Àneu is a living museum. It is not contained within a single building but it is made up of several monumental, ethnographic and natural elements, spread out among the municipalities of Àneu which, together, explain how the inhabitants of these Pyrenean valleys have lived from the end of the 19th century. It’s an innovative project that was born in 1994 and which carries out research, conservation, dissemination and recovers the past of the territory in which it is based.

The central point is the Casa Gassia, a house typical of the Valls d'Àneu in the 18th century. It maintains its original structure and the current exhibition space shows what domestic life was like during the first half of the 20th century. Starting from here, the Ecomuseum is spread over 10 further heritage centres.

There are churches - Sant Joan d’Isil, Sant Julià d’Unarre, Sant Pere de Sorpe, Sant Pere del Burgal, Santa Maria d’Àneu and the Son monumental complex - which explain what the popular religion, beliefs and rituals were like. And also defensive buildings, distant in time from each other, such as the medieval castle of Valencia d'Àneu and the post-war bunkers of Guingueta d’Àneu. At the same time, the industrial facilities, which include the hydraulic sawmill at Alos and the cheese dairy of Roseta de Gavàs, are a testament to the economic activities of the area.

In addition, through the objects and items situated in their place of origin, the Ecomuseum shows the transformations that this territory has undergone in recent decades, and allows the natural and monumental elements to be related to the social, cultural and ethnographic traditions.