National Parks with Highest Visitation

USA Today recently published an article listing the top 10 National Parks in terms of visitation.  While we've only written guidebooks to 4 of them since Yosemiet comes out next Spring (and also - those books include information about Grand Teton and Grand Canyon as well), we have personally visited seven of the 10.  Can you guess which ones we are missing? See the USA today write up with descriptions here, or look below for a short listing.

1. Great Smoky Mountains
   
2. Grand Canyon
   
3. Zion
   
4. Rocky Mountain
   
5. Yosemite
   
6. Yellowstone
   
7. Acadia
   
8. Olympic
   
9. Grand Teton
   
10. Glacier