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

A hollow cement depiction of time's inexorable effect on the human body.

The oldest house in Chicago certainly doesn't look the part and there are some who say it doesn't deserve its title either.

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

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

This small, but long-running hobby club has built one of the largest model rail lines in the US.

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

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

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

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

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

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.

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

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

Illegal drag racing two stories beneath Chicago’s streets.

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

A curious collection of miniatures in a quiet corner of the Chicago Children's Museum.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

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

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

Rifle through images of skyscrapers, Worlds Fairs, and more in the largest public postcard repository in America.

In Chicago, a pizza-enthusiast has opened a museum dedicated to the history of pizza.

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

Assemble a masterpiece at the first and only North American school exclusively dedicated to mosaic art.