The palatial McDonald's that inspired Wesley Willis.

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

This pair of eccentric Ohio castles were built by a pair of brothers who wanted to bring a bit of class to the Ohio wilderness.

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

Urban explorers embraced America's now demolished first suburban mall, south of Chicago.

A giant concrete egg marks this Indiana town as the "Egg Basket of the Midwest."

The world's largest man-made underground caverns offer unparalleled underwater wonders.

This former small town was destroyed not by the motor oil it sprayed the ground with but by the toxic waste that was added.

An obsolete, vanishing traffic device warns Cincinnati drivers away from middle-of-the-road obstructions.

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

Colorful collection of antique musical oddities.

Patrick Dougherty's fantastic living tree sculptures, mind-blowing but temporary.

Even with only two residents and one building, this tiny Illinois town is famous for its burgers.

One man's vision and a labor of love of many.

Part of a worldwide art project, this mysterious semicircle of concrete shapes holds the pieces of a larger story.