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

A chance to follow in the footsteps of the word's most legendary animator.

Small and slightly hidden, the American Writers Museum is preserving the legacy of America's finest authors.

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

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

Where old school Polish Chicago and young hipster Chicago live side by side.

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

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

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

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

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

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.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

An antiquated German apothecary on Chicago's North Side.

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

This historic hotel invented the chocolate brownie.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.