#1 The Gateway Arch and Old Courthouse with a row of pink blooming cherry trees in front

Gateway Arch National Park

MO · 3.0M visitors/yr

Busy

Gateway Arch National Park is 0.14 square miles of westward expansion history beneath a 630-foot steel monument with three million visitors.

#2 People in bright orange kayaks paddle around a bend in a river, past green trees and a rocky shore.

Cuyahoga Valley National Park

OH · 2.9M visitors/yr

Moderate Crowds

The Ohio & Erie Canal towpath runs 20 miles along the Cuyahoga River, past 65-foot Brandywine Falls and glacial rock ledges.

#3 A purple and pink streaked sky over a mountain peak and forested valley.

Mount Rainier National Park

WA · 1.6M visitors/yr

Moderate Crowds

An active volcano cloaked in more glaciers than any Lower 48 peak, Mount Rainier spawns five major rivers from ice beginning at 14,410 feet.

#4 A frozen lake below snow-covered trees and peak

Lassen Volcanic National Park

CA · 358K visitors/yr

Comfortable

Lassen Peak's 1914-1917 eruptions left a volcanic laboratory where boiling mudpots and sulfurous vents still reshape the ground.

#5 Michigan Lake beach with green grassy dunes in the background, under a blue sky.

Indiana Dunes National Park

IN · 2.7M visitors/yr

Very Crowded

Lake Michigan's wind built these dunes into the park system's highest plant biodiversity—over 1,100 species on 15 miles of Indiana shore.

#6 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.

#7 Rocky coastline with palm trees and a cliff beyon

Hawaiʻi Volcanoes National Park

HI · 1.4M visitors/yr

Moderate Crowds

Two active volcanoes shape terrain from tide pools to alpine desert. Walk across recent lava flows and through rainforests on ancient rock.

#8 View from forest floor looking straight up. Ferns as seen close up and redwood trunks meet.

Redwood National and State Parks

CA · 623K visitors/yr

Comfortable

The world's tallest trees stand in groves you can walk through on level trails, three hours north of San Francisco with a third the crowds.

#9 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.

#10 A pink sky above gentle white buildings

Hot Springs National Park

AR · 2.5M visitors/yr

Very Crowded

Hot Springs' 143-degree thermal water flows through historic bathhouses where health seekers once shared sidewalks with gangsters.