Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.

An artsy hidden staircase leads to breathtaking views of San Francisco.

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

Explore nearly 400 years of English middle-class home life.

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

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

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

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

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

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

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

A kaleidoscopic warehouse-maze of handmade neon signs.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

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

The legendary birthplace of the Japanese maneki-neko is dotted with hundreds of lucky beckoning cats.

The Argonaute submarine was the French navy's pride and joy in the 1950's.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

Where the lovelorn find a home for their sentimental keepsakes.

A uniquely robust and historic look at Mexico's omnipresent dance with Death.

Dedicated to the unsung history of human waste.

Eclectic collections, artwork, and some feline friends fill the writer's former home.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

An English artist has turned an unassuming ex-council house into a time-lost house of mystery.