A 19th-century architectural wonder designed by the "father of the skyscraper."

Ruins of a once-prized railroad station in New York.

This stunning gothic ruin was a casualty of the Indiana steel industry crash.

This old steel industry company town has a tradition of parking cars on the sidewalk so people can walk in the narrow streets.

First planned industrial community in the United States.

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

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

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

This historic hotel invented the chocolate brownie.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Illegal drag racing two stories beneath Chicago’s streets.

Rifle through images of skyscrapers, Worlds Fairs, and more in the largest public postcard repository in America.

A display of magnificent stained glass windows is the first exhibit of its kind.

A monument to the art of slicing people open.

A house and yard adorned with bizarre concrete sculptures in a Milwaukee suburb.

Where experiments are conducted on all things wood.

A bypass decorated with large wooden troll carvings.

This cave holds a surprisingly colorful variety of geological oddities.

A bizarre house filled with an astounding array of collections.

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

The headquarters of the prestigious World Food Prize celebrates the heroes in the fight against hunger, has no cafeteria.

Millions of dollars worth of sculpture decorate this Iowa city center.

Community bookshelf of 25-foot-tall book spines.