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

A flamboyantly decorated bridge signals diversity and fellowship at the entry to Indianapolis' Broad Ripple Village.

The home used in just a few seconds of film that came to define the setting of a hit sitcom.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

This unassuming home was once “grand central station” for the Underground Railroad.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

A lesser-known part of the Kinsey Institute is this impressive collection of art, artifacts, and material culture related to human sexuality.

Display that gathers the basic elements of the universe in one convenient location.

This former office building has been transformed into an immersive music venue and art space.

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

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

This hidden stream beneath Indianapolis makes an appearance in the best-selling novel "Underground Airlines."

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

This stunning gothic ruin was a casualty of the Indiana steel industry crash.

Nature and art meet in this curvy creation

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

This mysterious hill seems to pull objects uphill.

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

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

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

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

Symbolic attempt to overcome the issues of life.

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

A medical facility that has been kept frozen in time.