A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

Beating out all other concrete competitors, this massive garden feature's pointy hat has earned it a world record.

A number of gruesome unsolved murders have turned this simple home into a morbid tourist trap.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

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

A tribute to a 13-year-old boy who was kidnapped in 1793 and escaped over two years later.

Tombstones carved to look like tree trunks are used for multiple generations of family members.

One of the first schools in the U.S. to admit students without regard to race or gender.

An unknown number of cholera victims are buried in two nondescript graves.

Historians and hobbyists head to this former French outpost for the annual Feast of the Hunters' Moon.

The large rock formation where the Shawnee prophet Tenskwatawa stood and encouraged his warriors during the Battle of Tippecanoe.

This midcentury chapel is a bold architectural statement and a symbol of Indiana's Lutheran heritage.

The humble Hoosier roots of a famed Broadway composer.

Locals dubbed this abandoned abode the "gingerbread house" because of its odd architecture.

A collection of relics from the Spiritualist Camp Chesterfield.

A wartime promise becomes a shrine to Our Lady of Lourdes.

The largest historic preservation organization in the United States.

The bespectacled, cocktail-sipping pachyderm is a strange but fitting liquor store mascot.

The lynching and burial site of America's first train robbers.

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

For over 100 years, this Indiana town has had a tree growing out the top of the local courthouse.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

A chilling disappearance (and rescue) of a child uncovers a geological mystery.

You thought Santa Claus didn't exist, but it turns out you were wrong.