An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

The heads of two giant mythological water horses honor Scotland's horselord past.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

Spend the night in this formerly abandoned traditional Scottish village.

The location of this historic castle was inspired by a donkey.

Hidden in plain sight, Sweden's official ordnance datum is now abandoned.

This modern labyrinth lies in the shadow of a ruined medieval castle.

The tradition of using flowers to decorate wells is once again thriving in England.

6000-year-old site covered in more than 50 megaliths.

Exquisite carvings of leaves, Green Men, and the occasional dragon adorn a medieval chapter house.

One of England's oldest ongoing games is basically a town-wide scrummage that aims to push a leather tube into a local pub.

Although it appears ancient and mysterious, the quirky folly was actually built 200 years ago by an eccentric estate owner.

Britain's tallest megalith towers over the cemetery of a quiet English village.

Possibly the oldest living thing in Europe, more likely a pagan survivor.

Human-made caves excavated to hide a secret society of wealthy pagans.

This Navarrese cave's history of witchcraft and pagan ritual is not just embraced, but recreated each year.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

This modern monument to pagan belief looks like it was transported straight from ancient times.

Lithuania's outdoor sculpture trail of wooden folk art.

Picturesque intersection of witchcraft and ancient Christianity.

This elegant arc of a waterfall marks a religious turning point.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.