The rodent-shaped sidewalk imprint that earned worldwide media attention.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

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

This cheerfully-named branch of the Chicago River is the fetid result of years of blood, entrails, and meatpacking waste.

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

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

An enormous park-like oasis, full of famous Chicagoans' graves.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

A one-armed veteran of the Battle of Waterloo lies in a cemetery for one in the middle of a Chicago scrapyard.

Over 1,000 pieces of one of the most niche art objects imaginable: the glass paperweight.

A European-style bath house in Chicago.

This historic house museum that celebrates one of the world's most influential social reformers is also one of the most haunted locations in Chicago.

Designed by Alfred Caldwel, this landscape showcases his vision of a native garden.

Huge abstract sculptures of the Puerto Rican Flag.

One of the few remaining relics of the meatpacking hub that made Chicago the "hog butcher to the world."

Orthodox church partially financed by Tsar Nicolas II.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

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

In a quiet north Chicago neighborhood rests a stunning relic of the golden age of earthenware design.

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

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

A lush green oasis in the middle of Chicago.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.