English antique dealers with a taste for the unusual.

Created hundreds of years ago, the magical follies and landscapes at this park were almost lost to time before being restored.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

The remains of Crystal Palace Great Exhibition of 1851.

A collection dedicated to the treatment of disease, held in London's oldest hospital.

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

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

This tangled English forest looks like something right out of a fairytale.

A network of concealed passageways lies within a busy London Underground station.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The curios of pharmacist and collector Henry Wellcome.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

Hidden beneath the streets of London is a secret subway that only carried mail.

Dozens of feral felines rule a segment of Hollywood's only graveyard.

A one-of-a-kind collection of a unique medium.

One of the last umbrella repair shops in Paris upholds the nostalgic art of umbrella making.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

The world's brightest bioluminescent bay.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.

This 13th century castle is chock full of ghosts and impossibly rare cows.

The sign at the garden gate reads: "These Plants Can Kill."

137 graves holding New England's earliest residents.