Tucked in the back of this amazing antique store is an important piece of medical history.

A terrific purveyor of natural history objects and curios.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

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

These mansions date back to Chicago's days as a brewer's paradise.

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

This modest post office sits on the site of H.H. Holmes' famous murder castle.

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

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

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

Pizza with a side of fine art.

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

Internationally known record store and purveyor of "dusties."

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

All of Chicago's wood-paved streets are long gone but two alleys remain.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

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.

This unauthorized stone mermaid was secretly carved out of public stone before being permanently preserved.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

An antiquated German apothecary on Chicago's North Side.

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

A Bibliophile's Dream.

A lush green oasis in the middle of Chicago.