Today, we can assert that the recovery or restructuring of buildings is an appealing way to face architectonic problems related to the new urban, social, environmental and economic concept typical of the globalized world we live in. The projects gathered together in this book are just some examples from the infinite range of possibilities offered by architectonic rehabilitation, trying to display new ideas that create new spatial low cost concepts; how an architect can play with the existing architecture to change and reinvent it. This is a 360-degree look at the world-wide panorama of very different ways of working where a range of project decisions have been taken, casting into high-relief the subjective spirit behind these interventions.