On this Polish road, an optical illusion makes cars seem to roll uphill.

The soulless eyes of 82 bronze children stare on forever in remembrance of a horrifying World War II massacre.

This quaint museum tells about more than just the birth of Jesus: "betlémy" are an important piece of Czech history.

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

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

This charming wooden church was disassembled and moved not once but twice before settling in this Prague garden.

Steadily reminding Czechia of its past.

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

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

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

The first museum in the world devoted to sexual gadgetry.

Macabre astrological automaton clock dating to the late 1400s.

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

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

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

Monument to a suicide protesting the Soviet invasion.

A giant interactive periodic table with real samples of the elements.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

This ghost-town bar has bullet holes and plenty of stories lurking within its walls.

A unique workspace where offices reside on pirate ships and inside gingerbread houses.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

The pop art icon's gravesite is broadcast 24 hours a day on his museum's website.

Yo, Adrian!

A park full of outsider art, created by college students studying outsider art.