A strange mark in the stone fence of a cemetery fabled to have been made by the Devil himself.

Scene of the grisly murder of two Norwegian women in 1873.

Former laboratory of radical psychiatrist Wilhelm Reich.

Dozens of musicians have planted trees in this Danish park, and donated songs to go with them.

From buck blood to Theriak miracle tonic, this collection of Renaissance chemist's gear look's like a wizard's pantry.

The greatest amusement park in the world is wall-to-wall farting dogs, puking rats, and cows with exposed breasts for the whole family.

This Danish castle is supposedly haunted by a woman too independent to not be a witch.

The decaying remains of a 1960s mechanical wonderland that never officially closed.

Preserved "bog person" that is over 2,000 years old.

Nearly 40 miles and 1,000 years of limestone mines under Denmark.

The oldest amusement park in the world has been providing a nice spot to have some fun since the 1500s.

Iron Age "bog person" preserved for over 2,300 years.

A Swedish town came up with an out-of-the-box way to eliminate the bloodthirsty insects.

Gravity seems to fail at this intriguing Swedish attraction.

Walking through this narrow gorge will make you feel like you've fallen into a fairytale landscape.

This pyramid in southern Sweden houses the remains of an eccentric nobleman, who spent his life doing whatever he felt like doing.

Hundreds of mossy stones engraved with bits of philosophy, literature and random musings.

After it was swallowed by a Georgian mansion, this medieval castle remained forgotten for centuries.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

The Grand Lodge of Ireland is one of the oldest in the world, full of fantastical, elaborately themed rooms.

Though they've since been renamed, these two streets hint at Dublin's darker days.

This courtly monument celebrates an influential comedian who turned taking the piss out of the powers-that-be into an art.

Experience what life was like in Ireland during the Viking and medieval ages.

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.