The largest of London's subterranean rivers and once a mad, bad center of London life.

The bar where "The Great Train Robbery" was planned was once a nexus of high society and low morals.

Surreal riveted sea forts once protected the Kent shores from German attack.

Since 1887, this old-school shop has stacked its shelves with extraordinary coffees and teas.

A Roman spa buried deep beneath the City of London.

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

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

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

English antique dealers with a taste for the unusual.

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

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

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

A unique waterfall that some believe attracts the fairfolk.

Repository for more than 22 million pickled specimens.

One of the world's largest collections of pathological specimens.

London's old-school healing garden.

400-year-old garden, restored to beauty.

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

A historic house left in "dramatic still life."

This coffee shop lies hidden beneath a historic church.

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

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.