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

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

Both funky and traditional, it's the oldest of its kind in Indiana.

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

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

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

One tree's homage to soles past and present.

This mysterious hill seems to pull objects uphill.

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

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

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

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

This library and museum is dedicated to the life and literature of the Indianapolis native author.

A medical facility that has been kept frozen in time.

Nature and art meet in this curvy creation

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

This turn of the century jail once held Charles Manson.