Extremely isolated Silk Road caravanserai in the middle of nowhere.

Highly unusual subterranean stupa and adjacent cave monastery.

This ancient village and its adjoining cemetery have a beautiful history of death and remembrance.

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

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

Bioluminescent firefly squid light up this Japanese fishing port.

Think you have a tough job? Try carrying 200 kilos through a cloud of sulfur down the side of a volcano.

An abandoned whaling station on an active volcano offers hot springs in Antarctica, surrounded by ruined giants of industry.

One of the world's southernmost bars.

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

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

This one-time health resort was used by aristocrats around the world.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

The amazing wonder cabinets of a very rich Austrian archbishop.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The patron saint of spinsters grasps a container of dried blood.

King Ludwig I's collection of beautiful women.

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

Every inch of this chapel is covered in craftsmanship from across the world.

Machismo turned on its head: the lady's hand goes to the dude with the bigger brain.

This otherworldly palace-mausoleum complex is the stuff eternal dreams are made of.

If you've ever wanted to tear Hello Kitty apart with your teeth, this is the place.