The eerie remnants of an ancient forest were hidden under the sand for centuries.

Mysterious 500-year-old tapestries depict a unicorn hunt.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The curiosities and wonders of pharmacy in a delightful historic building.

A monument to the art of slicing people open.

A look into the Church of Scientology's deeply unfavorable view of psychiatry.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

The restaurant keeps a hidden séance room on the second floor and reserves a table for the spirit of the former owner each night.

A collection of Witchcraft artifacts and occult paraphernalia started by the leader of the Long Island Coven.

One part antique store, one part curiosities hodge-podge.

The world's longest known cave system.

This frequently-photographed waterfall takes only a short hike to visit.

A one-of-a-kind collection of a unique medium.

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

A toxic ghost town sitting atop a massive coal fire.

Continuing the tradition of the dime museum in style.

A semi-scholarly approach to sex.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

A snapshot of the city's fascinating voodoo culture.

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

Most-visited and most-photographed slot canyon in the American Southwest.

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