The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

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.

Former self-sufficient mental institution now a planned community.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

An office built to look like a giant basket.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

Berry Gordy Jr.'s old home was the original headquarters of Motown Record Corporation.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

Go inside to really appreciate this 500-year-old technological masterpiece.

Medieval torture techniques with a modern conscience.

Ruins of a Carnegie family mansion on Cumberland Island.