Folklore says this medieval fortress was plopped atop a portal to hell to trap the demons below.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

The deepest sinkhole in Central Europe comes with a grisly tale and an unusual nickname: “The Stepmother Abyss.”

The last municipal pneumatic post system in the world was in operation for over 100 years, and may run again.

A bus with a butt and biceps to put Olympic athletes to shame.

A crucified and bearded female saint.

The world's greatest slide descends 18 stories from this looping mountaintop viewing platform.

This spooky statue sits outside a famous Prague theater.

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

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

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

This former quarry is now a picturesque gorge that hides a sunken lake.

Microscopic scenes; some call it novelty, some call it art.

An Orwellian sculpture with eyeball cameras watches passersby.

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

Two monstrous faces loom over a village in Czechia.

Europe's second largest ossuary wasn't discovered until 2001.

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

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

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

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

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

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