The book deals with the potentials and limitations of sustainable tourism and the friction between tourism development and environmental quality, with a series of case studies worldwide: the development of sustainable tourism, sport tourism, e-travel services and e-tourism; environmental and human ecological effects of tourism on island and inland destinations; impacts of environment on historic districts, on recreation, leisure and sports; evaluation of low-carbon scenic spots; the current crisis experienced by the tourism industry caused by COVID-19. The book offers opportunities, including policy papers, not only focusing on the instruments to alleviate the environmental impacts, but also on methods for the efficient involvement of stakeholders.