Landscape and territorial development planning, often thought of in parallel, contribute to considerations about the living environment. This article uses the example of the programme implemented in the Allier region referred to as ‘sensitive natural spaces’ (in French, espaces naturels sensibles or ENS). The purpose of this programme is to understand how development within a territory focused on relationships within the landscape makes it possible to transform a vulnerable environment into one that is meaningful as well as socially and ecologically desirable. The interrelations between territorial developments and the landscape in the site of the Tortuous Beeches (in French, site des Hêtres tortueux), named after these remarkable trees tha...