The earth has been used during centuries as one of the most common building materials for humans, it has provided shelter since the first settlements and created also cultural landscapes. Even though it has many advantages, such as: low cost, local availability, breathability, and thermal insulation, the earth buildings are fragile and vulnerable to environmental and human being threads leading to a progressive degradation. It has to be taking into account that the conservation of earthen heritage not only safeguards material remains, it also contributes to the transmission of traditional construction knowledge being the base of the “culture of the earth.” This study is focused on the Piemonte region in Italy, recognized for having a rich heritage of earthen buildings.