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

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

Cat art as far as the eye can see.

The first museum in the world devoted to sexual gadgetry.

Walk through Czech history in Prague's largest graveyard.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Macabre astrological automaton clock dating to the late 1400s.

Two stunning 17th-century libraries and a cabinet of curiosities.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

An unusual manor of stunning beauty, born out of a crippling disease.

This ethereal, rainforest-like gorge is home to waterfalls, quaint bridges, and fairy folk.

This observatory within Europe's first dark sky park offers stunning views of the night sky.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

These fantastically named natural pools look like something out of a Scottish myth.

This Tuscan church contains a gallery of over 700 ex-votos depicting near-death experiences.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

This medieval mountain town is also known as the "Village of Streams."

This eclectic Austin curiosity shop is home to all things strange and unusual.

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

France's Lilliputian park displays over 100 of the country's monuments for visitor perusal.