Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

Commonly referred to as the most photographed Victorian home in the United States.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

This little museum has an exhibit devoted to the elusive forest denizens.

This lesser known Hearst estate is a fairytale village built from the stolen bones of historic European buildings.

The arch that celebrated the completion of the Lincoln and Victory highways.

Where the writer penned his famous story about a jumping frog.

Where the first "expert riders, willing to risk death daily" for the Pony Express were recruited.

The California capital city once stood 10 feet lower than it does today.

A replica of the first public theater built in California.

I Street Bridge is the heaviest swinging center bridge in the United States.

A tiny survivor of the Donner Party disaster.

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

This 19th century hydroelectric powerhouse was the first of its kind.

This museum looks at the history of one of America's most famous prisons and most beloved albums.

Bits and pieces from the ill-fated Donner Party's winter cabins.

This former boomtown "island" is now submerged below Folsom Lake.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

Rising out of miles of farmland, these buttes are sometimes called the world's smallest mountain range.

Local history museum with mammoth bones and an old myth about local giants

Small Nevada town embraced its designation as the "Armpit of America" with an Old Spice-sponsored festival.

Dubbed the "Blade Runner dragon," this buzzing neon sign is a beloved local icon.