When the rain falls, this drain system turns into a musical instrument.

Museum devoted to the artificial language of Esperanto.

A spherical "micro-nation" in the heart of Vienna.

The beautiful baroque library of the Hapsburg empire.

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

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

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

A wunderkammer of mysterious objects and stories.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

This small train ride offers stellar views of the Grand Garden Palace.

A unique hanging cable-car navigates through Dresden, the oldest suspension railway in the world.

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

A series of playful yellow penguins share a serious message about the environment.

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

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

Monument to a suicide protesting the Soviet invasion.

This spooky statue sits outside a famous Prague theater.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

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

This artificial cave looks like something out of a fairytale.

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.