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

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

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

Remnants of a Victorian garden feature sitting in public woodland.

This 1920s Dutch barge is now a floating bookstore.

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

The curios of pharmacist and collector Henry Wellcome.

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

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

This South London cemetery holds the remains of more than 15,000 people.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

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

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

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

Where Aleister Crowley attempted to seize the Hermetic Order of the Golden Dawn in a mask and a kilt.

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

This home on a quiet suburban street is completely covered with vibrant mosaics.

Eclectic final resting place of the controversial explorer.

A marine aquarium with an astounding variety of fish hides in the basement beneath the famous Palm House.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

A kaleidoscopic warehouse-maze of handmade neon signs.

An artisanal toy-maker’s works are highlighted in this museum dedicated to the craft of toys.

Make a tough dinner decision: Octopus wasabi roulette or bull penis?