An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

The first declared National Monument in the United States.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

Eighteen miniature death-scene dioramas.

Mysterious rocks that ring musically when struck.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

Home of an evil witch famous within southern folklore.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Where America's first doomsday cult awaited the end of the world.

One man's homage to the sun continues to grow like a glass fractal.

A toxic ghost town sitting atop a massive coal fire.

Stroll through a wonderland of stupendous moss-covered trees.

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

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

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

World's first "penitentiary," meant to be humane, drove men insane.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

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