The unbelievably opulent home built for an infamous newspaperman.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.

This spooky road cut through a mound of ancient coral might be haunted by a witch.

Abandoned bridge hidden deep in the San Gabriel Mountains.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

A dry lake is what remains of a community founded on a real estate scam.

Built by one man in the '20s, this site is now a museum representing the Great Basin cultures.

The first declared National Monument in the United States.

Since World War II people have been decorating this stretch of the Yuma desert with signatures arranged out of rocks.

A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

It's easy to see why this eclectic architectural wonder has been dubbed the "Spaceship House."

The largest earthwork effigy in the world.

A self-built castle made by a mysterious man.

A natural formation that resembles a camel resting in the New Mexico desert.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Factory that once supported an entire company town of 350.

A giant donut stands as a popular symbol of Los Angeles iconography.

A petroglyph map of the upper Snake River carved by prehistoric hunter-gatherers.

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.

The fading, forgotten remains of a once bright and booming factory.

Jail from the 19th century that was built by inmates.

The largest outdoor art gallery in the Northwest United States.