Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

This Detroit ruin was once a gothic bastion of its community, but now it stands as a haunting ruin.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

"I did this all while you were watching TV."

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

The legendary building that needed ghostly approval before being built.

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

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

A bizarre house filled with an astounding array of collections.

The sea once considered an ecological wasteland is now called "crown jewel of avian biodiversity" by scientists.

A hand-built folk art installation covered with messages of God's love.

Where there's quartz, there must be gold. Thus is the story of the mines of Julian, and the titillating times of the Gold Rush.

The site of murders and Satanic cult gatherings.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

The ghostly remains of an accidental sea.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.