This book serves to shed some light on several controversial questions about contemporary interventions on religious heritage buildings.In the mid-1960s, a process of renewal of Catholic churches began, which sought to respond to the liturgical modifications implemented during the Vatican II (1962-65). Fifty years later, this process continues to be problematic in buildings with a high heritage or historical value.From an operational point of view, it is stimulating to revisit the most relevant architectures at the international level, those high-impact works that were generated thanks to an...