Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

The inverted pyramid design of this station stands out amid Bratislava's urban landscape.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

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

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

This unique exhibit "Dialogue in the Dark" reverses roles as the visionless become guides and the sighted become ‘blind.’

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.

Be on the lookout for the symbolic insect all over the city.

19th century museum with an eclectic mix of curiosities, from Egyptian artifacts to items on archery history to the skull of the world's oldest horse.

This Manchester laundromat is hiding something.

These lovely Turkish-styled baths were brought back to life after winning a reality show competition.

This dreamy street will transport you to wintertime in Victorian England.

Hidden on the urban banks of a Manchester river are a series of abandoned waterside industrial sites.

Have a seat with the father of modern computing at this Manchester monument.

Dating back almost 400 years, the oldest public collection library in the United Kingdom was once the study hall of Karl Marx.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

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

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

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

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

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

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