The medieval institution is home to the precious treasure stolen in World War II in one of the greatest art thefts of the 20th century.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

This East German military command bunker was ready for World War III.

A museum honoring Germany’s cucumber mecca offers a great dill of gherkin history.

Explore the complex ecology of this multifaceted nature preserve by riverboat.

The "Prussian Versailles" that is as glorious today as when it was built.

Solar observatory doubles as a daring display of Expressionist architecture, much to Einstein's chagrin.

Started as a kitchen garden, now the second largest botanical garden in the world.

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

Floating swimming pool within a moored vessel.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

A monument to the man who almost killed Hitler.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

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

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

Walk through Czech history in Prague's largest graveyard.

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

Two stunning 17th-century libraries and a cabinet of curiosities.

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

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

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

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

This automated sculpture of two men peeing will spell out text messages with their micturition.

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