A humble homemade ride attracts visitors from around the globe to this small Midwestern town.

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

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

A county library in rural Ohio houses one of the finest mineral collections in the world.

Ornate limestone building now filled with geologic specimens, and more.

A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.

If astronomy had a ghost, it would look like this observatory.

Tucked away in the forests of Indiana resides an abandoned waterslide that is now a popular graffiti haunt.

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

Locals place their offerings on this nightmarish gnarled tree so the witches won't summon another storm.

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

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

Inside this wonderland of weird, visitors are treated to a collection ranging from skeletons to haunted artifacts.

An equine tribute in a charming Southern city that calls itself "The Horse Capital of the World."

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

This bridge uses an inverted bowstring truss and is believed to be the only of its kind in the United States.

An abandoned relic of the city's failed experiment with below ground transit.

Where beautiful signs live on forever.

A small wall and marker are all that remain of this historic canal tunnel.

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

This abandoned limestone quarry now provides visitors with multiple, breathtaking viewpoints.