Great Smoky Mountains
11.338.893
Grand Canyon
6.254.238
Zion
4.504.812
Rocky Mountain
4.437.215
Yosemite
4.336.890
Yellowstone
4.116.524
Acadia
3.509.271
Olympic
3.401.996
Grand Teton
3.317.000
Glacier
3.305.512
Joshua Tree
2.853.619
Bryce Canyon
2.571.684
Cuyahoga Valley
2.226.879
Hawaii Volcanoes
2.016.702
Hot Springs
1.561.616
Arches
1.539.028
Shenandoah
1.458.874
Mount Rainier
1.415.867
Death Valley
1.294.827
Sequoia
1.291.256
Capitol Reef
1.150.165
Haleakala
1.112.390
Badlands
1.054.325
Everglades
1.018.557
Saguaro
964.760
Canyonlands
742.271
Crater Lake
711.749
Theodore Roosevelt
708.003
Kings Canyon
692.932
Denali
642.809
Petrified Forest
627.757
Wind Cave
619.924
Mesa Verde
613.788
Mammoth Cave
587.853
Glacier Bay
547.057
Carlsbad Caverns
520.026
Lassen Volcanic
507.256
Great Sand Dunes
486.935
Biscayne
446.961
Redwood
445.000
Big Bend
440.276
Channel Islands
383.687
Black Canyon of the Gunnison
307.143
Virgin Islands
304.408
Kenai Fjords
303.598
Voyageurs
237.250
Pinnacles
233.334
Guadalupe Mountains
225.257
Great Basin
168.028
Congaree
159.595
National Park of American Samoa
69.468
Wrangell-St. Elias
68.292
Dry Tortugas
54.281
Katmai
37.818
North Cascades
30.326
Isle Royale
28.196
Lake Clark
22.755
Kobuk Valley
15.500
Gates of the Arctic
11.177