This arid landscape was once a lush wetland. Today, it's a paleontological site filled with fossilized mammoths, sabertooth cats, and more.

Nearly 300,000 acres of wildlife, natural splendor, and a hidden ghost town have been designated a national monument.

The largest man-made crater in the U.S. marks the spot where we once tested mining with nukes.

This famous Nevada gold mine, once a hotbed of Wild West shenanigans, is now open for tours.

This massive geographical sculpture is so subtle, it's possible to pass by it without noticing.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

Graffiti, cars, and religion combine to create this jungle of scrap in the Nevada desert.

Odd outsider art installations surround a Gold Rush-era ghost town.

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