Tourism is one of the fastest growing internationally traded service sectors. Although it has brought prosperity to struggling regions and improved the financial prospects of countries facing economic difficulties, tourism comes with important challenges. It tends to grow so fast that it generates social problems. Its fast pace of growth also undermines its own future sustainability, as overcrowded destinations eventually lose their appeal. Moreover, tourism sometimes fails to generate broad-based benefits for local communities. This collection explores the relation between tourism, economic development, and long-term socioeconomic and environmental sustainability in a variety of locations.