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

A historic hotel library in Indiana hides more than a few secrets on its shelves.

This former Indiana quarry has been transformed into a park and SCUBA site where divers can explore the drowned mining equipment.

More than 3,200 cookie jars line the walls and shelves of this little shop and over 1,000 salt and pepper shakers

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

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

This mysterious hill seems to pull objects uphill.

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

A modern-day wunderkammer dedicated to Indianapolis history, Afrofuturism, and musical vibrations.

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.

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

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

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.