The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

Spend the night in this formerly abandoned traditional Scottish village.

The last inhabitants of one of the U.K.'s most remote islands were evacuated in 1930.

Stockholm's last remaining paternoster elevator.

A steel paper plane is all that remains of a crashed aircraft that caused an amazingly small amount of damage.

A marker honors the brief peace found by a tormented artist in the fictional land of Kcymaerxthaere.

Dubbed "Wistom" by locals, this abandoned factory is an urban explorer's dream.

A cluster of headless, armless sculptures looms within a popular Polish park.

This symbol of Polish heritage survived the occupation during World War II, hidden in plain sight.

This oddly beautiful water cistern is a techno-temple to the wet stuff and a multimedia masterpiece.

This fairytale medieval church in Poland originally spent centuries in Norway.

Old cabin-like homes in a rural community untouched by time are known for their vibrant and colorful window shutters.

The coffin-shaped church was once home to monks who slept in coffins.

Come to this Polish museum to take a good, clean look at filth.

Modern art commemorates one of the first military actions of World War II.

This tower in a small Polish village uses the power of a sacred bell to ward off mischievous weather spirits.

This mysterious and once-grand memorial still embodies a remarkable architectural vision.

This centuries-old wooden wonder was built in less than a year and is one of Europe's largest timber-framed churches.

What was once an underground Nazi city is now Europe's largest bat reserve.

A mysterious structure left behind on the Polish mountainside, sometimes called "Hitler's Stonehenge".

This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

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