It is believed that tourism is playing an important part in the economy of different countries and it also helps to open the minds of both visitors as well as domestic people. Firstly, a host country will receive a huge amount of foreign currency in form of the money visitors bring to this country. Actually, many of today societies, especially those of developing countries, have to depend on tourism to develop. Secondly, international travelling is a way to exchange cultures between different countries and bring news to many places. For example, in rural areas and mountainous regions of Cambodia, not so far from now, people used to be self-sufficient and their lives so relied on agriculture. If the rice grows well, they have enough food to eat and to store; but if the rice does not grow well due to bad weather, then the people may starve to death. Thing is not hard as it used to now because the people can have another source of income which comes from tourism. Locals started making souvenirs and sell them to visitors and have money to buy food and other necessary stuff that they can not produce. Also, from the activity the local people do in their everyday life, tourists can learn a lot about their culture which is the greatest benefit from tourism.