One of the last free public hot springs is decorated with hippie art.

The neighborhood shop is a sort of tiny cactus museum full of exotic specimens you can take home.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

One of the ghostly stops along Route 66.

Small museum packed with artifacts recovered by the man rumored to be the real-life inspiration for Indiana Jones.

The largest drain hole in the world.

This massive redwood tree has a hole in the base big enough to drive through.

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

A common entry point to the Griffith Observatory trail holds its own wonders.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

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

An inconspicuous footbridge beloved by San Diego locals.

A ghost town at the airport is now a refuge for blue butterflies.

A faux European lane smack dab in downtown L.A.

Explore 10 acres of environmental sculptures.

An essential stop before plundering, BYO Cutlass.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

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

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