[3] The museum's mission is to collect, preserve, maintain, expand, investigate, communicate and disseminate the tangible and intangible heritage of an ethnographic nature from Western Asturias.

The Grandas de Salime Ethnographic Museum occupies an area of approximately 3,150 m², and its permanent collection comprises over 11,000 objects that have been acquired from donations, some of them from the residents of Grandas de Salime, or that have been purchased by the Consortium.

The hórreo and the cellar built underneath, used as a stable or warehouse, was demolished in the early 20th century.

Spaces recreated in the Rectory include a kitchen and fireplace, linen and wool production area, event hall, bedroom, cobbler's workshop, food storage cellar, store, carpenter's workshop, and forge.

[5] Its accompanying mill house is a two-story structure that hosts multipurpose spaces for the museum today.