A former squatter's paradise outside Prague.

The oldest garden in Prague, once part of an medieval orchard.

A crucified and bearded female saint.

An existential riddle in the world's largest ancient castle.

This artificial cave looks like something out of a fairytale.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

Walk through Czech history in Prague's largest graveyard.

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

Countless grotesque faces stare out from this eerie Prague art wall.

A Jenga-style cylindrical tower of books that appears to go on forever.

Macabre astrological automaton clock dating to the late 1400s.

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

Isaac Newton's former home, where the famous apple tree still stands.

England’s ancient oak tree has such an impressive girth, people have been hosting parties within the hollow trunk for centuries.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Neolithic burial chambers hidden beside a village school.

This graveyard contains markers and monuments dedicated to some of the darkest chapters in Washington's history.

The classic lawn figurine now claims this wooded area as home.