Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

A mysterious Castle is now home to a rare breed of goat.

This emblematic representation is said to bring the students good fortune.

The 18th-century inspiration behind Harry Potter's Sorting Hat.

Believed to be an execution site used by King Arthur after he was embarrassed.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

A herd of half-sized cow sculptures has stood in this part for nearly 50 years.

One Italian taxi driver covered his entire house in small seashells creating a weird bit of architecture that is preserved to this day.

This 2,000-year-old Doric bridge is still open to pedestrian traffic to this day.

A World War II evacuation tunnel turned into a history display of Croatian state and people.

This 135-year-old weather station studied the effects of the climate on human health.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

A musical instrument played by the sea.

Several bricks indicate the various flood levels this crossing has survived over the centuries.

A succinct inscription commemorates the ebb and flow of a woman's life.

These ancient rock graves were featured on the cover of a Black Sabbath compilation album.

Inscribed on the gate are the names of 29 figures from the University's first five centuries.

The oldest church in Inverness witnessed the brutal executions of many Scottish soldiers.

Once used to protect important Roman trade routes.

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

A unique art installation located on what was once considered the widest railway bridge in the world.

This bronze sculpture represents the helpless, hapless, and the damned who have passed through Piccadilly station since it opened in 1842

A monument to the real explorer and bear who inspired characters in Philip Pullman's 'His Dark Materials.'

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.