This Polish cave has housed a dragon, a brothel, and an enduring legend.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

Real bones which are said to have belonged to a Polish dragon.

Polish luminaries and masterful folk art find sanctuary in this unique cemetery.

A mesmerizing landscape of 18th-century cellars carved out of the land.

Too much gossip or just missing curfew could land you in here for a couple of days.

An unusual cave filled with rare alien-looking aragonite formations.

A perfectly preserved hill village where the buildings are painted like white lace.

The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

A church of bones, decorated with 40,000 human skeletons.

The mystery of the Putim Ossuary involves a tricorn hat.

These 17th-century mummies are no longer naturally preserved, but remain on display today.

Underneath the city that invented pilsners are a series of historic tunnels that have been storing beer for centuries.

Thirty creepy ghosts now inhabit this decaying 14th-century church.

A spiral staircase twists to the top of this unusual Czech lookout tower.

The 14th-century ruins are said to contain healing powers.

Two monstrous faces loom over a village in Czechia.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

A mocking tribute to the past and modern leadership of Prague.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

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

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

This automated sculpture of two men peeing will spell out text messages with their micturition.

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