Geological and geomorphological heritage protection has been frequently considered a last-rate priority by organisations and governments, either within their general policy for heritage conservation or particularly within the conservation of nature. In spite of this complaint, a change of this tendency is taking place during the last few years. The growing interest for geological heritage can be seen from the definition of Geosites as a specific form of World Heritage by UNESCO. In addition, a much broader attention to this subject has been paid by the scientific community, environmental educators or the ecotourism sector. The legislation of Castilla–La Mancha Region, Spain, considers the geo(morpho)logical environment to be an important component of Nature. This is the first region in Spain that makes explicit a mandate for the protection of specific landforms. This paper describes the procedures and outcomes of a research project that constitutes the first implementation of this law, concerning the inventory of landforms from their 'natural heritage' point of view.