#1 Steep, rugged ocean cliffs extending in an island chain.

Channel Islands National Park

CA · 263K visitors/yr

Comfortable

California's Galápagos lies 12 miles offshore with 145 endemic species. Sea lions, island foxes, and rare seabirds inhabit five islands.

#2 A sunset creates a silhouette of a cypress tree with needle-like leaves that is shaped like an 'N'.

Everglades National Park

FL · 742K visitors/yr

Comfortable

America's largest subtropical wilderness—a slow-moving river creating sawgrass marshes, mangrove islands, and alligator habitat.

#3 A few of the stars at night with a view of Fort Jefferson.

Dry Tortugas National Park

FL · 84,873 visitors/yr

Busy

Seven coral islands 70 miles west of Key West, anchored by Fort Jefferson—a massive 19th-century fort that was never finished or fired upon.

#4 Coral reef with two snorkelers diving below the surface

Biscayne National Park

FL · 512K visitors/yr

Busy

Miami's skyline floats on the horizon while you snorkel over the continental United States' only living coral reef system.

#5 Photo of Giant Dome and Twin Domes in the Big Room.

Carlsbad Caverns National Park

NM · 460K visitors/yr

Moderate Crowds

A 600-foot limestone cavern beneath the Chihuahuan Desert, carved by sulfuric acid rather than water, where 400,000 bats spiral out at dusk.

#6 Blooming Cenizo

Big Bend National Park

TX · 561K visitors/yr

Comfortable

Big Bend protects 1,200 square miles where the Chisos Mountains rise from desert. Over 450 bird species recorded—more than any park.

#7 A thick layer of frost covers the fields, trees, and mountains in Cades Cove.

Great Smoky Mountains National Park

NC, TN · 12.2M visitors/yr

Busy

America's most-visited park offers 850 miles of trails, historic farmsteads in Cades Cove, and the continent's salamander capital.

#8 Boulders in the Balconies Cave.

Pinnacles National Park

CA · 354K visitors/yr

Moderate Crowds

Volcanic spires rise above talus caves where you can crawl through darkness on designated routes. Half of Yosemite's crowds.

#9 Tuafanua Trail

National Park of American Samoa

AS · 22,567 visitors/yr

Room to Breathe

The only national park south of the equator protects volcanic peaks, coral reefs, and villages across three South Pacific islands.

#10 El Capitan with blooming claret cup cacti

Guadalupe Mountains National Park

TX · 226K visitors/yr

Comfortable

Texas's highest peaks rise from a 265-million-year-old fossil reef in the Chihuahuan Desert, holding more species than any Texas park.