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

Once known as the Illinois Asylum for the Incurable Insane.

This rare female version of the Muffler Man has its clothes removed each summer to signal the start of pool season.

These Depression-era WPA sculptures have made a couple of stops over the years.

The world's third-largest scale model of the planets.

The Reagan Peace Garden at Eureka College features a chunk of the Berlin Wall.

What was once the largest NFL stadium.

A crumbling mountain resort that looks like it was abandoned in an instant.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

The largest ski jump in the Western Hemisphere hasn't hosted skiers in decades.

These dramatic cola-colored falls have appeared in a poem by Henry Wadsworth Longfellow and a song by Sufjan Stevens.

This state-of-the-art planetarium takes architectural inspiration from the sun itself.

A larger-than-life version of the hat beloved by hunters, outdoorsmen, and Holden Caulfield.

At the top of a local ski mountain is a hidden cemetery containing the graves of just two soldiers.

A 12-foot sculpture serves as a constant reminder of the importance of protecting and restoring the Boardman River.   

This elaborately-carved white marble fountain was built to stand outside the Detroit Opera House.

This mechanical wonder towers above a river in Michigan's capital city.

Perched atop a brick smokestack, this enormous lug nut symbolizes the local minor league baseball team.

This scenic overlook commemorates the tragic death of a soon-to-be-married lumberjack.

"The Most Boring Road in the State."

One of the few working locomotive roundhouses in the United States.

On the shores of Lake Superior, a small group of monks makes sacred sweets.

Where the Model T was made and the assembly line was invented.

Dating back to the 1800s, two imposing buildings in Michigan have had countless transformations over the years.