Which country do you vote as the most beautiful country in the world ?

That depends on what you consider "beautiful". China has probably the most varied landscape in the world, with tower-like mountains, terraced hillsides, rivers, etc. I find the architecture in old city centers in Europe, and in Asian cities such as Kyoto, stunning, and the beaches in the Caribbean are matchless. I do agree that New Zealand has some of the most amazing hill and valley areas, and Canada, when it's not covered with snow, has some beautiful scenes of nature. But your list seems to be pretty ethnocentric.