France's most famous cemetery, with some of its most curious tombs.

This wildly-tiled artist's palace is a living and growing account of the creator's life, loves, and labors.

An incarceration museum on the spot of possibly the oldest prison in England.

Eighty million natural history specimens call this gargantuan museum home.

A historic house left in "dramatic still life."

Catacombs turned marketplace.

Hear the quietest sound from across the dome.

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

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

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

The curios of pharmacist and collector Henry Wellcome.

An unusual round church in London with a Templar past.

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

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

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

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

Banksy gives themself artistic license with this piece of London street art.

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

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.

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

This cemetery features modernist statues as strange as its name.