This massive underground salt mine now holds a sci-fi theme park in its depths.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

A Hungarian optometrist's charming collection of Asian art and curiosities.

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

Museum dedicated to the terror regimes of Hungary.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

This museum promotes informed contraception by documenting its often secret past.

Dine amidst exotic plants at this former royal greenhouse.

This Austrian museum celebrates the work of famous forgers and their inimitable imitations.

The final resting place for the remains of 143 Habsburg royalty.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

This former insane asylum now holds a pathological anatomy museum.

Macabre museum devoted to historical Viennese murders.

The beautiful baroque library of the Hapsburg empire.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

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

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

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

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

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

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

The first museum in the world devoted to sexual gadgetry.

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

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