These barriers stand as stark reminders of Northern Ireland's troubled past.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Eighty million natural history specimens call this gargantuan museum home.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

A Nesting Doll of Churches.

Rome’s legendary peephole vista is also a former Crusader stronghold.

A magician and his beloved, pampered canine were buried together, within days of each other, due to a tragic twist of fate.

This Scottish graveyard is the final resting place of the man who inspired the character Ebenezer Scrooge.

The most loyal of little dogs, or a Victorian era publicity stunt?

Protecting the dead from opportunistic body snatchers.

Reminders of the Battle of Berlin still scar the railway.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

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

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This modern museum of Mediterranean culture is surrounded by a surreal concrete honeycomb.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

A treasure trove of astronomical, mathematical, and scientific instruments at Cambridge University.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.