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

Famously misunderstood wonder of the ancient world

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

The oldest working mechanical clock in the world.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .

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

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

This 11th century tower is said to be the oldest building in Oxford.

The beams of the New College, Oxford dining hall come with an amazing story.

One of Europe's oldest libraries.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This historic home of the author of Lawrence of Arabia, has a history of literary celebrities and monogrammed sleeping bags.

A popular day's outing in Bovington consists of watching military tank driving practice.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

Giant naked man on a hillside.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

The school tested mustard gas for the U.S. Army during World War I.

These old doors are covered in the signatures of Rehoboth Beach artists dating back to the 1930s.

The historic home still shows the scars from a little run-in with the British in 1813.

London's smallest police station is barely the size of a phone booth.