Notorious artist squat renovated into legal studios.

Abandoned railway line circling the city of Paris.

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

A curious collection dedicated to human and animal anatomy and pathology.

Hidden on the 7th floor of a historic building, this Cajun spot features wall-to-wall bottles of hot sauce.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

A century-old network of freight tunnels underneath the city's historic business district.

A military museum and library dedicated to the citizen soldier.

Illegal drag racing two stories beneath Chicago’s streets.

This historic-shipwreck-cum-diving-spot can still be seen poking its boiler out of the Lake Michigan waters that claimed it.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

This surprising gem is a world-class archeological museum hidden at the University of Chicago.

Combination beer garden and music venue in the heart of Wicker Park.

One-of-a-kind preserved ruins of an abandoned 1880s church in Chicago's Pilsen neighborhood.

One of the largest pieces of scientific equipment ever carried on a NASA space shuttle sits in a Chicago alley.

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

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

Years of archaeology, just chillin' by the water cooler.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

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

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

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

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