ABSTRACT: This research proposes that Nature Reserve Areas can act as a driving force to articulate a quality label of landscape, heritage and territory in peripheral areas like the West Catalan Pyrenees. At the same time, through promotion of Nature Reserve Areas, a multiorganizational project of local development can be built. After an exposition of rural-urban dynamics in a global context, the chapter explains how the values of landscape and heritage in mountain areas can be an opportunity to put into practice integrated territorial policies applying transverse methodologies among actors, institutions and the private sector. At the same time, local development projects would prioritise the support of young people and women as one of the sectors most likely to innovate and maintain social and human capital in peripheral areas. Co-operation and collaboration are practices needed to create new economic activities with the participation of local actors.