This book discusses the the integration between tourism and heritage and strategies to achieve sustainability in the tourism sector. The book adds innovative insights into the development of new practices solving challenges of sustainability in this sector and promoting responsible tourism. The book in hands also offers solutions and discusses sustainable tourism environment, social and economic impacts of tourism, and policies and mechanisms for heritage preservation. The primary audience of this book will be scholars, planners, architects, and stakeholders interested in sustainable tourism. This book is a culmination of selected research papers from IEREK's third edition of the International Conference on Cultural Sustainable Tourism (CST) held online in collaboration with the University of Maya, Portugal (2021).