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

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

This museum celebrating the almighty dollar lets visitors literally stand in the shadow of a million bucks.

A century-old network of freight tunnels underneath the city's historic business district.

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

The only Bahá'í house of worship in North America and one of only a handful worldwide.

Internationally known record store and purveyor of "dusties."

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

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

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

The subtle science of a master molecular gastronomist.

An antiquated German apothecary on Chicago's North Side.

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

A lush green oasis in the middle of Chicago.

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

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

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

This shop for all your super spy needs hides an educational secret.

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

The lowest point in South Dakota and the source of the Minnesota River.

A waterfall 600 ft. inside a mountain, once the bane of gold miners, is now a spectacle of nature.

An impressive collection of farm equipment and other artifacts from life on the prairie.

This monument remembers one of the manliest men of the frontier who fought a grizzly before dragging himself 200 miles to safety.

One devoted couple has donated multiple recreations of Michelangelo's sculptures to this South Dakota town.