A tunnel with windows, so you don't miss out on the impressive views.

No one's quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.

The unusual patterns in this rock formation result from two distinct modes of weathering.

This park is home to California's first oil boomtown, with structures that have stood for more than a century.

On the Oregon coast there is a natural hole that seems to be draining the sea.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

Exotic feline breeding compound and conservation center.

Large tower used for simulating radiation of Hiroshima bomb and the tallest object ever relocated.

Remnants of the United States's largest accidental oil spill still mar a California valley.

Everything you always wanted to know about borates is here.

Water of undetermined depth has attracted rare fish and cult leaders alike.

The "3rd largest" city in California is an empty mirage of suburbia in the middle of nowhere.

Abandoned hotel with adjacent lake and golf course.

An errant donkey ushered in a new era of mining in Nevada.

In the middle of a remote desert town is a surprisingly opulent hotel.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.

There's nothing creepier than a cemetery next to a clown motel.

The liveliest ghost town in the state.

Thousands of turbines whir at at the origin of North American wind power.

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

A brothel nestled amongst ghost towns, with an abandoned plane wreck to greet you.

Salt is slowly eating away this abandoned saltworks town in the desert.