The origins and use of conservation principles and practice from the nineteenth century to the present day are charted in this volume. Written from the perspective of a practitioner, it examines the manner in which a single, dominant mode of conservation, which held sway for many decades, is now coming under pressure from a different and more democratic heritage management practice, favouring diversity, inclusion and difference.The author blends case studies from Ireland, Cyprus and England with examples from current practice, community heritage initiatives and political policy, highlighting the development and use of international charters and conventions. Central to the main argument of the book is that the sacred cows of conservation - antiquity, fabric and authenticity - have outlived their usefulness and need to be rethought. Dr Keith Emerick is an English Heritage Inspector of Ancient Monuments in York and North Yorkshire; he is also a Research Associate at the University of York.