La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

A terrific purveyor of natural history objects and curios.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

A huge musical instrument played by the ocean.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.

A hillbilly theme park that proved so unpopular the land wouldn't even sell on eBay after it closed.

The only diamond mine in the world where you can keep what you find.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.

A sculptor's dream castle turned fantastical ruin.

These eerie outliers of the lightning bug family glow a mysterious blue color.

This woodland architectural installation acts as a camera obscura for the heavens.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Visit this playground of waterfalls, caves and sinkholes.

All that's left of the quintessential "cabin in the woods."

Home of an evil witch famous within southern folklore.

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

This New Orleans tree is filled with hidden chimes that produce a carefully tuned melody.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.