A small but immensely extravagant palace built by the "Night King."

The world's oldest known salt mine.

Hiding the longest subterranean river known in the world.

Tiny castle in the middle of the Rhine made you pay to pass.

An experimental, automotive replica of Stonehenge.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A toxic ghost town sitting atop a massive coal fire.

A white oak with property rights.

Less a museum than a bizarre fantasy world created by artists and engineers.

The longest burning light bulb in the world.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

The Mysterious Witch Bonney, a haunted statue in an old industrial city.

A mysterious light in the wood, rumoured to be the the ghost of a railroad brakeman.

Taxidermy, Cigar Store Indians, A Model of a New York Tenement and Delicious Draft Root Beer.

A restaurant and observation deck built in a unique broadcasting antenna.

France's most famous cemetery, with some of its most curious tombs.

Robots, lasers, and whoopee cushions, oh my!

The metal-free wooden towers of Brück.

A Nesting Doll of Churches.

Climb the dead electric pylons of Messina.

Australia's first open air museum and antique 3D theater.

Abandoned city hidden from the world by tropical forest and isolation on the coast of Kenya.

An old abandoned mining town in The Adirondacks where Theodore Roosevelt first learned of the shooting of President William McKinley.

One car at a time please.