America's 10 Most Visited National Parks
10. Joshua Tree National Park // 2.4 million
9. Olympic National Park // 2.5 million
8. Acadia National Park // 2.7 million
7. Cuyahoga Valley National Park // 2.8 million
6. Grand Canyon National Park // 2.9 million
5. Grand Teton National Park // 3.3 million
4. Rocky Mountain National Park // 3.3 million
3. Zion National Park // 3.6 million
2. Yellowstone National Park // 3.8 million
1. Great Smoky Mountains National Park // 12.1 million