A steep and winding road in the Yorkshire Dales passes by these deep natural potholes.

The ghosts of Britain's telecommunication past sit rusting away in a small village in England.

A modern English garden of eccentric beasts, follies, and oddities.

This century-old grotesque has a mysterious history and may not actually be a rabbit.

Eighty million natural history specimens call this gargantuan museum home.

Hundreds of years ago, this lion-shaped door knocker could help a person accused of a crime find temporary safe haven in Durham Cathedral.

An abandoned Yorkshire castle that is hidden in plain sight.

The church and nearby castle are all that remains of a medieval village, mysteriously abandoned.

A surreal paleontological sculpture garden pays homage to a fading industry.

An art gallery dedicated to art works by coal miners which depict work in the mines and life in the former British mining communities.

According to local legends, a monstrous worm once wrapped itself around this hill by the River Wear.

This recessed garden protects thousands of mountain plants by creating its own microclimates.

Pitié-Salpêtrière was the dumping grounds for women who received the dreaded diagnosis of "hysterical."

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

This museum houses an imposing skeleton army comprised of creatures great and small.

This Parisian café sticks almost exclusively to an ethos of reuse.

A haunting collection of the vanished and disappearing natural world.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

This frog-themed restaurant was frequented by Picasso, Saint-Exupéry, and more.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

France's most famous cemetery, with some of its most curious tombs.

This massive library holds what was once the largest book collection in the world.