The world's largest collection of mechanical puzzles is a cornucopia of analog bafflers.

The humble Hoosier roots of a famed Broadway composer.

Now in disrepair, this 19th century station was a stop on of the famed B&O Railroad.

What is it about mushrooms that makes people wish they lived inside of them?

This magnificent Cincinnati graveyard is also a popular public park.

A suspended garden, now gone, once hung in the middle of this abandoned church.

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

The mysterious white squirrels of this Illinois city are treated like sacred cows.

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.

The 40-year-old machine serves soda quicker than you can catch it for a mere 75 cents a pop.

This railroad overpass is said to be home to a murderous goat-man whose very legend has led to very real deaths.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

This candy shop has been serving up sweets to the Louisville area since the 1850s.

The massive, original Colgate Clock is mounted on a defunct factory building that was once a prison.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

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.

Symbolic attempt to overcome the issues of life.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

Ruined pieces of stone and a swimming pool are all that remain of an amusement park swept away by a flood.

A castle built by an eccentric medieval enthusiast in rural Ohio.

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

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

The longest navigable underground river in the United States is home to countless blind and albino animals.

An art deco ice cream shop covered in vintage train station tiles.