Catacombs turned marketplace.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

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

The curios of pharmacist and collector Henry Wellcome.

A hands-off space for graffiti artists to hone and display their skills.

A tongue-in-cheek arcade where the games are based on everyday life.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

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

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

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

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

A kaleidoscopic warehouse-maze of handmade neon signs.

This beautiful 19th-century temple stands atop the ruins of its predecessor.

A serious museum dedicated to two German comedians.

A subterranean display of public art and architecture.

One of the most easily accessible examples of the rare 1960s UFO houses.

Go surfing on this urban wave, "hacked" by local surfers.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

A quaint hamlet of nine cottages around a small green near Blaise castle.

Banksy's image of a naked man dangling from the window of a sex health clinic.

There's a labyrinth of manmade tunnels stretching for over an acre beneath Bristol.

England's steepest street has such a drastic incline that locals tie their parked cars to lampposts when it gets icy.