A 200-year-old prison that now houses a peculiar crime museum.

The final resting place of the last "gypsy king" of Poland.

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.

At this Arctic outpost, get to know members of the indigenous Sámi community and meet their herds.

In the northernmost city in the world, it's illegal to be buried because it’s too cold for bodies to decompose.

The convergence of two currents makes this a surprisingly pleasant getaway in the Arctic Circle.

Archaeologists are still unraveling the secrets of the brutal massacre that wiped out this ancient fort.

Sound travels strangely in this underground whispering gallery.

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

A rare rune stone dedicated to a woman.

The three colorful women depict characters from a beloved children's story.

This patch of land is home to Sweden's largest burial mound, allegedly belonging to a mythical king.

This tiny Swedish troll protects the land and all who wander within it.

This mysterious runestone embedded in a church wall is linked to the medieval cult of Saint Erik.

Gravity seems to fail at this intriguing Swedish attraction.

Enormous ants wielding giant pine needles guard a Stockholm real estate company's office.

Sweden's oldest street has not changed for nearly a millennium.

A memorial to a Swedish hockey player's "encounter" with aliens.

This cobblestoned medieval-style town was entirely constructed in the 1990s and 2000s.

This giant crucifix is like U2's Joshua Tree for Swedish death metal fans.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

Every Tuesday, students let off steam by screaming into the night air.

This trio of stone spires claims to be the only preserved medieval execution site in Europe.