Deep scars on the earth left by the Ice Age.

Moonbows over Kentucky.

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

An abandoned asylum incorporated into a college campus.

The first artificial white water river course in North America cuts right through an Indiana city.

An abandoned theme park with a strange and tumultuous past.

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

Beautiful waterfalls grace a canyon visibly torn by a violent tornado.

This grave in a ghost town cemetery marks the death of a witch on a day that never happened.

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

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.

Modeled after the labyrinth in Chartres Cathedral, this small-town Indiana memorial labyrinth sits half a world away.

The first spinning jail built in the United States is the only one that still turns.

The only freestanding table rock formation east of the Mississippi.

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

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

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

The largest earthwork effigy in the world.

A miniature world of concrete and stone in Springfield, Ohio.

The largest ancient burial mound in Ohio.

A theme park featuring a replica of Noah's Ark built to the measurements specified in the Bible.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

A 70,000-square-foot institution dedicated to a very literal, creationist perspective on the Book of Genesis.