Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

A sculpture of the iconic East German car on four legs is a tribute to those who traveled to Prague seeking asylum.

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

This artificial cave looks like something out of a fairytale.

An old asylum graveyard that's been abandoned for half a century attracts those seeking a dark thrill.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

A saintly relic hidden in a Prague church basement.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

Walk through Czech history in Prague's largest graveyard.

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

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

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

Macabre astrological automaton clock dating to the late 1400s.

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

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

An architectural oddity of six stories, accessed by graceful ramps.

Natural mummies hidden in the crypt of a medieval French church.

The artist and his brother are buried in a landscape straight out of a van Gogh painting.