A bloodstain from "the wound of the transverberation of the heart."

A goddess-topped water fountain in Chicago was created thanks to the dreams of a thirsty newsboy.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

One of Chicago's last seafood smokehouses perfects a dying breed of fishcraft.

No one knows how many bodies are in this vault in a Chicago public park.

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

Orthodox church partially financed by Tsar Nicolas II.

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

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

Former bath house turns gastropub.

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

The iconic Chicago sculpture hides a beautiful and easily overlooked plaque on the backside.

The 606 is a decade in the making.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

A hot dog stand where the heads are just as hot as the dogs.

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

Built to house a chapter of the Knights Templar, this grandiose building is a relic of Freemasonry in Chicago a century ago.

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.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Chicago's North Park Village was once the largest municipal sanatorium in the country.

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

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.