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

What looks like a suicide in progress is actually a statue of Sigmund Freud.

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

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

The first museum in the world devoted to sexual gadgetry.

A church of bones, decorated with 40,000 human skeletons.

Macabre astrological automaton clock dating to the late 1400s.

Countless grotesque faces stare out from this eerie Prague art wall.

An abandoned airport in the middle of nowhere.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Catalonia Tradition: Beating the hollow Christmas log until it defecates in your fireplace.

Vibrant street art created with mixed media.

This "flat geyser" bubbles up out of the ground periodically like a disappearing river.

One of Europe's largest supercomputers is housed inside of a disused chapel.

A museum filled with tiny, adorable versions of the mighty Royal Danish Navy.

This historic Art Nouveau townhouse was the former home of the son of a famous chemical inventor and industrialist.

This whimsical statue dumps water on its head to symbolize knowledge flowing into his brain. Or maybe booze.

This striking structure is the Socialist-modernist centerpiece of a former Soviet spa resort.

What this Good Friday parade lacks in baroque filigree it makes up in somber gothic imagery.

Traversing steep Alpine slopes, this engineering marvel is one of the longest and highest funiculars in the world.

These abandoned salt flats are now a haven for wildlife.

The ruins of an ancient fortification wall sit in front of and underneath this boutique hotel.

The partially submerged ruins of a white marble quarry used in ancient Greece for over 1,200 years.