This document discusses key concepts in the geography of tourism. It defines tourism and its components, including tourist-generating areas, tourist-receiving areas, and transit zones. It also classifies tourism based on the type of destination as domestic or international tourism, by characteristics such as ecotourism or adventure tourism, by market or purpose of visit, by interaction with the destination as mass or alternative tourism, and by distance traveled as long-haul or short-haul tourism. Finally, it provides examples of market-based classifications such as holiday, common-interest, and business tourism.