A hidden barn-sized rendition of Grant Wood's most famous, and most parodied, painting.

This folk art compound was built by a fortune teller on the advice of three people from the future.

"Try not to knock anything over!"

Microscopic scenes; some call it novelty, some call it art.

Walk through Czech history in Prague's largest graveyard.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

Dedicated to the unsung history of human waste.

The hidden lair of an alchemist rediscovered in a 2002 flood.

A hospital where antique dolls are given new life.

An alchemist's "magic door" stands in the middle of a Roman park.

Thousands of rusting train cars have been slowly falling apart on the edge of Greece's second largest city.

Monasteries on rock pillars, once accessible only by frayed ropes.

A deadly ancient portal to the underworld.

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

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

A Turkish ghost town abandoned in a population exchange with Greece.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

Hidden for 165 years inside a building designed by Thomas Jefferson are the remains of what may be America's first educational chemistry lab.

Private collection of art inspired by cabinets of curiosity.

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

A creepy steel gremlin has protected the Bay Bridge since 1989.

Tenacious mummies survived dental problems, eternal entombment, and more than their fair share of devastating fires.

A winding path built in secret on the edge of the continent.