An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

The former headquarters of history's oldest megacorporation.

This massive mural by famed pop-artist Keith Haring was hidden for almost 30 years until its 2018 rediscovery.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

A small mountain at the crossroads of Turkey, Iraq, and Syria that some believe was the landing point of Noah's Ark.

A beautiful 19th-century Armenian mansion is preserved above an unassuming cafe.

An Art Nouveau gem hides beneath the layers of city grime obscuring this once-magnificent building.

Naturally protected city carved from a rock face.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

Even after the church tried to wipe the practice out, this pagan festival lives on each year in a small Scottish village.

This small museum in a 17th-century building honors three iconic Scottish writers.

The strange behavior of a tween led to allegations of witchcraft and a curse being placed on anybody within earshot.

A Scottish manor with a history of mysterious fires, magic, and eccentric tales

This macabre monument atop an ancient well gives a nod to a brutal episode in Scottish clan history.

This historic pub has maintained much of its 1906 decor, including a small sequestered room for women, where orders were slipped through a tiny window.

Nestled amid the peaks and lochs of the Scottish Highlands, this inn and pub has played host to outlaws and ghosts.

This tiny island featuring 9th-century Viking ruins is only accessible at low tide.

More stones than Stonehenge, all scattered within a windswept landscape sure to enchant 'Outlander' fans.

Legend says a witch conjured the world's third largest whirlpool to protect Scotland from a nasty pirate.

During this Shetland Islands celebration, hundreds of torch-carrying "guizers" lead a procession to burn a viking longboat.

This allegedly haunted 16th-century tower house-turned-museum exhibits thousands of spectacular objects.

Legend says this cave housed a 16th-century cannibal and his family of 48.

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