The book aims to provide the ability to approach restoration of historic architecture in a methodical way starting from basic concepts in terminology. In the different chapters will be addressed the theoretical aspects of restoration: stylistic restoration, Anti-Restoration, Historic Restoration, Scientific/Philological Restoration (in the first volume), the Critical Restoration, the Critical-Conservative Restoration, the Pure Conservation, maintenance/repair and currents trends (in the second volume). The history of conservation will be studied in different historical periods, countries, in different conceptions and through its main protagonists. The Charters of Restoration will be described and studied. The next volume will present the current trends in restoration. With contributions by Susana Mora Alonso-Muñoyerro and Ignacio Mora Moreno