According to World Tourism Organisation (WTO) “tourists are the people who are travelling to and are staying in the places outside their usual environment for not more than one consecutive year for leisure, business and other purposes.” Globalisation has made tourism the most popular leisure activity. Tourism that crosses national borders is called international tourism.
International tourism is broad sense is the number of inbound arrival of people in a country which is not their native. International inbound tourists are the number of tourists who cross the border(s) and arrive in a country for a period not exceeding 12 months. Inbound tourists mean the number of people arriving not the number of people travelling. For example, a person travels from New York to Paris several times a year then every time his arrival will be marked as a new arrival.
Different countries have different ways of recording the arrival of the international tourists but the most common ones are administrative records such as immigration data, border surveys or a mix of both of them.

United Nations World Tourism Organisation - UNWTO
United Nations World Tourism Organisation or UNWTO as it is popularly known as is a United Nations agency responsible for the promotion of feasible, liable and universally accessible tourism. UNWTO is one of the world’s leading organisation in the field of tourism. It advocates tourism as the driving force of the economy and its growth, it promotes inclusive