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What are the top 10 most beautiful national parks in the United States?
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1. Yellowstone National Park, Wyoming 
2. Glacier National Park, Montana 
3. Grand Canyon National Park, Arizona 
4. Rocky Mountain National Park, Colorado 
5. Great Smoky Mountains National Park, Tennessee 
6. Yosemite National Park, California 
7. Zion National Park, Utah 
8. Acadia National Park, Maine 
9. Sequoia and Kings Canyon National Park, California 
10. Olympic National Park, Washington