The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

An alchemist's "magic door" stands in the middle of a Roman park.

Architectureal fantasy quarter of Rome.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

From Nazi chemicals to the CIA, this architectural marvel has played a fascinating role in German history.

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

The world's only silo that was topped by two revolving restaurants has unfortunately been demolished.

This German fountain of a legendary apple wine-loving drink thief will spit on you.

Fantastic views and thousands of love locks.

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

Carved fountains poignantly placed in parks and in front of special monuments.

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

After years of being casually peed on by humans, this tree is peeing back.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

A comic book store that puts the marvel back in marvellous.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

England's most famous front door has an accidental doppelganger.

The ritual has been performed uninterrupted for nearly 700 years.

An unassuming London park is actually a pilgrimage site for modern clowns.

A tiny replica of the iconic London landmark hides on the side of the steel structure.

It is still illegal to "quarrel" at this unlikely urban oasis built on top of an electrical substation.

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.