In all the Italian and Croatian cities and towns involved in REVIVAL, there are many dismissed areas, buildings (e.g. summer camps, schools, barracks, military fortifications) and industrial complexes lying in a state of neglect and decay. This is an almost totally lost heritage, that today must be re-discovered, revitalized and reused for multiple reasons. REVIVAL will allow to transform the lost cultural heritage in a leverage for a sustainable and more balanced territorial development, in which a relevant abandoned man-made heritage will play a central role. As the starting point is clear, the change that REVIVAL will introduce is to put at the center of attention of regional and local communities and potential investors the lost heritage concerned and try to find for it creative and sustainable solutions.