The show pony of cave systems, Fantastic Caverns manages to live up to its name.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

This mosaic-covered bar is brimming with curated curios.

A geological oddity formed by two rivers carving out a mass of limestone on both sides.

If there's another drive-through golf-cart bar in a bat-filled cave on top of a mountain, we don't know about it.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

Community bookshelf of 25-foot-tall book spines.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

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

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

Curious cave that stays a cool 56 degrees all year long.

This abandoned prison castle has become an imposing gallery of graffiti art.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

European castle ruins in an American state park are actually the product of death and grief.

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

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

More than 100 years after his death, the world's largest steer is still attracting crowds.

On the grounds of this study, Lew Wallace composed "Ben-Hur: A Tale of the Christ" and many other works.

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

One of the few authentic Japanese gardens in the state of Indiana and perhaps the most peaceful place in the city of Mishawaka.

The modern museum honors the achievements of the state's all-star athletes.

The Fun Farm weaves fairy tales, myths, and magic into a magnificent collection for visitors to explore.

Purdue students would lean over this iron fence to skirt campus rules against smoking and courting.