National Park
1) Great Smoky Mountains (NC/TN)
2) Grand Canyon (AZ)
3) Yosemite (CA)
4) Yellowstone (MT/ID/WY)
5) Olympic (WA)
6) Rocky Mountain (CO)
7) Zion (UT)
8) Cuyahoga Valley (OH)
9) Grand Teton (WY)
10) Acadia (ME)
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2006 Visits
9,289,215
4,279,439
3,242,644
2,870,295
2,749,197
2,743,676
2,567,350
2,468,816
2,406,476
2,083,588
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