On the side of a remote mountain, a stone face bearing an inscription of mysterious origin.

Wee (and not so wee) footprints that insects and reptiles of the Paleozoic Era left behind.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

Costa Rica's best known combat zone, used during the Battle of Santa Rosa.

Seventy-five miles of limestone caves host more than a million bottles of wine beneath a sleepy Moldovan town.

A toxic ghost town sitting atop a massive coal fire.

One of the "twins" in these falls on the Snake River was sacrificed for hydropower generation in the 1930s.

Essence of hound's tongue and tincture of bloodroot are just the tip of the herbalist iceberg at this beautiful, impressively-stocked apothecary.

An abandoned World War II bunker is part of a chain that runs throughout Washington.

Tour the original street level of Port Angeles, buried underground in 1914.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

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

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

When life gave this firefighter a forest fire, he made a rough-hewn sculpture park using a chainsaw.

The fictional star of "Breaking Bad" is memorialized with a real-life gravestone in his hometown.

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

A picture-perfect town, perfect for blowing up.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

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

This massive crater in the middle of nowhere was used to train astronauts for moon landings.

The only thing still moving in this town is the eponymous hot spring.

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