Abstract : From the middle of the eighteenth century onwards, mountains became areas of a modern experience. The alpine landscape became the object of a codification which oscillated between the major categories of the sublime and the picturesque. Paintings by artists such as Cozens and Turner established the bases for a new perception of the mountains. Then, in the nineteenth century, with the work of people like Ruskin and Viollet-le-Duc, a transformation took place that enveloped both individual perception and the collective imagination. The mountains were no longer seen as an expression of regularity or irregularity, a metaphor of order or chaos, but as expression of an ethic of modernity, providing a constructive principle from which t...