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

An old world fairytale-land with over 350 fairy folk figurines hidden amongst 800 year old cedars.

Bouncing, delightful, mechanical art at the MIT Museum.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

The largest self-built castle in the U.S., six decades in the making.

A house carved into a rock in the 1940s.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

A massive maritime collision may have led to the myth of a resort island's strange financial status.

One of the deepest blue holes in the world.

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

Asthmatic Charles Hyett's son built a fantastical garden for his father to convalesce in, alas it was too late.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

One man's swirling six-acre monument of stone.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

This monumental Jesus is often referred to as "Our Milk Carton With Arms."

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

One of the world's steepest streets seems to have houses sliding down it.

Modeled after a famous church in Vienna, Austria—but in Helena, Montana.

Rising 30 feet in the air atop Quarry Hill, the Old Powder House is the oldest stone building in the state of Massachusetts.

An Irish town has built a statue to a silent film actor simply thanks to the holidays he once spent there.

This tall Massachusetts folly got its name thanks to all of the purple prose its vistas inspired.

The programmatic glory of LA's giant whiskey barrel building has become an upscale reminder of the city's kitschy roadside past.

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

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.