This book introduces important reflections on understanding the meaning of cultural-religious heritage in an international context and their relationship with issues of sustainability at the local community level. Through a holistic approach, the book charts new courses in analyzing different cultural policies and methods for preserving and enhancing cultural heritage. Stemming from an intercultural seminar promoted by the International Scientific Committee Places of Religion and Ritual (ICOMOS PRERICO) under the theme of "Reuse and regenerations of cultural-religious heritage in the world: Comparison among cultures," the book examines the scientific diplomacy and cultural strategies promoted by countries in dialogue with the UN 2030 Agenda, as well as Agenda 21 for Culture. The book seeks to reinforce the value of local cultural policies for supporting and enhancing cultural-religious heritage through specific programs and collaborations in dialogue with government policies. This collection is relevant to scholars working in areas relating to cultural heritage, religious heritage, architectural restoration, protection of the local inheritances, law, and management of the cultural sites.