Where do the seven natural wonders of the world come from?

The Seven Natural Wonders of the World is a poll conducted by a private company, NewOpenWorld, held worldwide after the election of the New Seven Wonders of the World.

Wonder of Vietnam:
Where is the wonder of Vietnam?
Please name some of the wonders of Vietnam.
Food:
Have you eaten pho?
Guess where, in what year?, pho was invented?
I ask you, what story is banh chung comes from?
Tet:
What kind of food do you have in Tet holiday?
Please write a New Year greetings!
Environment:
What trees in the environment, with flowers?
Let's draw a picture of the environment?
Please name some types of wood used to make living things?
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