This macabre painting of a Shakespearean scene looks like something out of a nightmare.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

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

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

A hidden tunnel leads to a medieval queen's shrine buried beneath a parking lot.

An optical Illusion once believed to be an electrical phenomenon.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

Cryptic messages embedded in the New York City sidewalk.

Elevated freight railway turned wildly successful urban park.

Tucked in the back of this amazing antique store is an important piece of medical history.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

A sweet symbol marks the place where torturous executions were once carried out.

A mechanized clock where a man fights off a dragon, crab, and rooster.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

A surrealist timepiece by the artist of melting clocks.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

Hidden away in a modern library are the remains of one of the 18th century's most celebrated wunderkammers.

A haunting collection of the vanished and disappearing natural world.

A museum of magic with a Sadist past.

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