An antiquated German apothecary on Chicago's North Side.

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

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

A strange rock in Chicago marks the spot where a tree once stood in honor of the 18th President.

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

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

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

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

A large circus museum with summer performances.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

Hidden away in the city of Madison, Wisconsin is a nearly forgotten home that Frank Lloyd Wright built for a childhood friend.

More than 8,000 drinking jugs say “Cheers!” to a guy named Toby.

This shallow cave got its name from copious amount of human bones found inside.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

One of the largest crucifixes in the world stands 55 feet tall in a secluded, wooded area of northern Michigan.

This sprawling mini-golf empire is an impressive testament to a disappearing attraction.

The 606 is a decade in the making.

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

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

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

Internationally known record store and purveyor of "dusties."

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

The 30,000-volume library is one of the world's most impressive poetry collections.