In 2010, the municipal government of Gandia asked us to carry out a foresight exercise with the aim of establishing the basic lines of action for the next period of government 2011-2014. Having established by consensus with the local government the basic questions on which it would be necessary to study in depth, a more detailed methodological reflection was needed to serve as a guiding thread for the work in progress. This guiding thread could be to set as a central objective to move towards a sustainable territorial model. This approach has the advantage of being based on a generally accepted concept with a broad consensus and which, due to its holistic nature, makes it possible to articulate practically any sensible urban policy proposal. We recall that urban sustainability is a collective learning process that leads to higher levels of integration between economic growth using increasingly modern technologies, improved levels of social cohesion and active respect for inherited heritage (natural resources and environment, architectural heritage and cultural heritage).