Rome's semi-secret peephole vista is also a former Crusader stronghold.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Architectureal fantasy quarter of Rome.

A Baroque mansion with ties to legendary magicians and alchemists.

This bar and museum are devoted to the controversial comic book work of Kája Saudek.

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

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

Dedicated to the works of the legendary special effects artist.

A significant example of Czech cubist architecture—a style you won't find anywhere else in the world.

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

One of the famous Czech artist's lesser-known Prague installations appears to be a glowing fetus affixed to a drainpipe.

A surreal statue honoring Prague's favorite literary son.

This spooky statue sits outside a famous Prague theater.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

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

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

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

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

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

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

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

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.