A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

This luxury shopping lane has been protected by its own tiny police force for over a century.

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

This giant radio telescope would be a rusting ruin if it hadn't become such a beloved relic.

While most bridges allow roads to pass over water, this one allows water to pass over a road.

This former hydraulic laboratory is now a woodland dotted with old engineering models.

The oldest museum in Russia is home to a fascinating collection of nearly two million anthropological artifacts and anatomical curiosities.

The ritual has been performed uninterrupted for nearly 700 years.

Pop culture has helped to keep this iconic British building from being destroyed.

The fairy tale castle of the "fairy-tale king."

One man's desire to transcend art led to the construction of this outsider chapel.

The site of the climactic scene from the classic horror film is now a historic landmark.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

This gigantic monument hidden in the woods was built to thank the Dutch for sheltering Belgian refugees during World War I.

Climb inside an iron crystal magnified 165 billion times its normal size.

The world's largest wooden structure.

There’s a hidden military meme engraved on the World War II Memorial.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

Yup, that's a 330-foot yacht passing over the highway.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

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