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

The prototype for all Nazi concentration camps.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

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

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

A German apartment building hosting as many trees as human occupants.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

One car at a time please.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

A New England curiosity cabinet, one hundred years on.

A small chapel celebrating the spiritual bond between dogs and humans.

The world's largest rotating world.

Odd outsider art installations surround a Gold Rush-era ghost town.

A land of debatable treasure.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

"Only the devil could play golf here."

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

A museum dedicated to exhibiting remarkable outsider art.

The resting place of a Civil War celebrity's amputated limb.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

Treehouse motel and treehouse-building school.