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 hidden green space is the city's second largest conservatory.

The largest cactus farm in Africa.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

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

The largest clown school in Britain offering accredited degrees.

A roadside shrine to a late rock god only remains thanks to the unyielding efforts of his fans.

Taxidermied animals galore, by appointment only.

This elaborate Byzantine-style building was designed for a not-so-pretty purpose.

A kaleidoscopic warehouse-maze of handmade neon signs.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

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

The anatomical-pathological collection of a man who changed surgery.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

An encyclopedic collection of mammal penises.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

This home of a taxidermy hoarder is among the grandest and most singular of historic English estates.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

A beautiful and classically designed villa, with an hourly infestation of monsters.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.