According to the World Tourism Organization tourists are the people who "travel to and stay in places outside their usual environment for not more than one successive year for leisure, business and other purposes not interrelated to the exercise of an activity rewarded from within the place visited". Tourism is mainly popular as a global freedom activity.
Tourism is a critical source of income for many countries and it generates income through the consumption of goods and services by tourists, the taxes levied on businesses in the tourism industry, and the opportunity for employment in the service industries associated with tourism.
Some of the services offered by these industries include transportation services such as cruise ships and taxis, accommodation services such as hotels, restaurants, bars, and entertainment venues, and other hospitality industry services such as spas and resorts.
The tourism requires having some of disposable income, time off from work and other responsibilities, proper transportation and accommodation facilities and legal clearance for traveling. More than all, sufficient health condition during the course of travel is required.