TOURISM: Tourism is the movement of people to destinations outside their usual environment for various reasons, including leisure, business, or other purposes. These visitors' activities, known as the visitor economy, can have a significant impact on the visited locations economically, socially, and culturally. This can involve enjoying recreational activities, relaxation, and pleasure, often with the help of established businesses offering services and experiences. Tourism is a multifaceted and dynamic industry that has evolved significantly over the years. It encompasses the movement of people to destinations outside their usual environment for personal or recreational purposes, contributing substantially to the global economy and generating employment opportunities and income for millions. The tourism industry can be broadly categorized into two primary types: international tourism, where tourists travel to foreign lands, and domestic tourism, where tourists explore their own country. The most frequently visited countries by international tourists include France, Spain, the United States, China, Italy, Turkey, Mexico, and the United Kingdom. Tourism serves as a crucial industry, providing employment and income to millions of people worldwide and contributing significantly to the economies of various nations. The steady rise in popularity of tourism since the 1950s can be attributed to advancements in technology, the proliferation of the internet, the increasing availability of paid vacations, demographic changes, and media exposure. The tourism life cycle, proposed by Professor Richard Butler, consists of four stages: initial discovery, growth, decline, and regeneration. This model helps us understand the pattern of popularity that tourist destinations follow. Tourism is not limited to leisure activities; it also includes business tourism, cultural travel, environmental effects of aviation, international tourism advertising, medical tourism, and science tourism, among others. The United Nations World Tourism Organization (UNWTO) plays a crucial role in promoting responsible, sustainable, and universally accessible tourism, providing statistics and insights on key indicators for inbound and outbound tourism globally. In conclusion, tourism is a complex and multifaceted industry that has a significant impact on the global economy and local communities. It encompasses various forms, including international and domestic tourism, and serves as a crucial source of employment and income for millions of people worldwide.