A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

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

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

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

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

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

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Go inside to really appreciate this 500-year-old technological masterpiece.

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

Famously misunderstood wonder of the ancient world

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Eighty million natural history specimens call this gargantuan museum home.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Macabre astrological automaton clock dating to the late 1400s.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

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

Looming communist pillar with a Czech twist.

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

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.