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

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

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

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

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

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

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

The beloved home to all publications indie, erotic, and punky.

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.

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

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

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

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

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

Internationally known record store and purveyor of "dusties."

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

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

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

An antiquated German apothecary on Chicago's North Side.

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

A Bibliophile's Dream.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

This monolithic statue was erected in honor of Chief Black Hawk (even if it wasn't made to look like him).