Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

An architect transformed this abandoned cement factory into his castle-like workshop.

An ancient stone fortress considered by many to be the eighth wonder of the world.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

These abandoned grain silos and tunnels are an urban exploration dream.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

Chicago's museum dedicated to the history of bondage and fetishism is more textbook than titillation.

Nonprofit art center that promotes outsider, intuitive, and self-taught art.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

A monument to the art of slicing people open.

A speakeasy takes on Chicago's drinking culture.

This shop for all your super spy needs hides an educational secret.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

These morbid carvings remind churchgoers of the inevitability of death.

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

London's largest outsider art museum.

A little slice of Japan and its aesthetics in London's Holland Park.

Collection dedicated to brands, packaging and advertising.

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

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

One of the world's largest collections of pathological specimens.

One part local history, 99 parts gruesome haunted house.