A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

A surrealist timepiece by the artist of melting clocks.

A fiery crater has been burning in the Karakum Desert since 1971.

A beautiful but toxic fountain of mercury.

A 20-meter (65-foot) robot towers over Tokyo Bay.

This unauthorized stone mermaid was secretly carved out of public stone before being permanently preserved.

The intriguing personal collection of a professional demon-chaser.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

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

This charmingly homemade amusement park has been growing for 40 years.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

Bioluminescent firefly squid light up this Japanese fishing port.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

Fine dining in the bizarre world of Lewis Carroll.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

A bizarre roadside attraction and the first instance of miniature golf in the world.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

An enormous park-like oasis, full of famous Chicagoans' graves.