Today, when tourism is one of the world's leading industries, a large number of countries are investing in their tourism development in order to compete in the world market. Thailand, as one of the most powerful and popular countries in Southeast Asia, is an example of a successful tourist destination, attracting an increasing number of domestic and foreign tourists every year. Unlike other countries in Southeast Asia, Thailand records the weakest development of the industrial sector, and for this reason almost all revenue for the country comes from tourism. It started to get involved in world tourism quite late and in a very short period of time it recorded an extremely large increase in international tourist arrivals. The rapid development of tourism in Thailand has led to certain problems in the country, such as the concentration of tourism being biggest on the coastal area and in its capital Bangkok, causing regional differences and their uneven development. There was also the problem of increasingly difficult poverty alleviation in the country, as well as an increase in crime. The negative image of Thai tourism is also created by sex tourism, which first appeared in the 1960s during the Vietnam War, and continues today and is the reason for the international arrivals of many tourists. On the positive side, medical tourism in Thailand has been developing more and more in recent years, attracting many tourists from the most developed parts of the world. The attractiveness of Thailand as a medical tourism destination is certainly related to the price, which is lower than in Western countries, and doctors employed by Thai private hospitals are often educated at prestigious colleges in developed countries such as the US and Australia.Thailand has lots of natural attractions and numerous cultural and historical sights. Given that it is one of the few countries in Southeast Asia that has never been conquered by colonial powers, the cultural and historical sights of this country are almost completely traditional and authentic, and mark different periods of Thai history. As for its natural attractions, Thailand is rich in a variety of plant species, the most famous of which are orchids, and animal species such as tigers, elephants and numerous bird species. It is also rich in geomorphological tourist resources such as mountains and caves, surrounded by the Andaman Sea and the Gulf of Thailand, with numerous islands and archipelagos. Along the sea, it contains a large number of rivers and lakes, and protected areas such as national parks.