Cavernous opening completely encased in Karst limestone.

This Costa Rican topiary park is a surreal garden of unearthly delights.

An enormous, 30-story-deep hole in the middle of Guatemala City.

Hidden deep in the Guatemalan jungle is a turquoise paradise of natural pools, caves, and waterfalls.

A modernist landscape of water and sci-fi concrete.

The hallucinogenic center of the ancient world.

This floating cinema brings new meaning to the phrase "going out" to the movies.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.

In paradise, feral pigs have claimed an island all to themselves.

Peek through a transparent pyramid and drink in the mountain made of books.

Abandoned bridge hidden deep in the San Gabriel Mountains.

A museum of carnival attractions where you are invited to ride the rides.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

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

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

The world's longest known cave system.

One man's ambition created this psychedelic log home.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

Canyon walls shrouded in ferns.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

Outsider Art Community.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

Featuring a casually threatening atmosphere along with dessert and coffee to die for.

Roman ruins top white travertine terraces formed by ancient hot springs.