Casa Mazo is a preserved traditional Pyrenean farmhouse that serves as an ethnographic museum documenting the daily life of the valley's inhabitants before modern times. The rooms show the tools, textiles, and domestic arrangements of families who lived here in the eighteenth and nineteenth centuries — the kind of material that gets thrown away everywhere else but survives here because the valley remained largely cut off from the rest of Spain until well into the twentieth century.
The museum is small but well put together and gives real context to the stone houses you walk past outside. The guides, when available, often speak about the Cheso dialect — the local variant of Aragonese — and the traditional culture it carried.