This tiny 19th-century tunnel was built so a man could move his cows from one field to another.

Prehistoric animals decorate this popular outdoor park.

Once one of the most polluted caves in America, now an environmental success story and a museum dedicated to caves.

Get up close and personal at this Fresnel Lens.

These figures float and flutter in this fountain crafted by famed Swedish sculptor Carl Milles.

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

This mysterious hill seems to pull objects uphill.

A former limestone quarry has found a new life as a flourishing community garden.

A herd of roughly 250 American bison roam these plains.

Home to some of Indiana's last bison herds.

A unique outdoor timepiece at a "clothing-optional" resort.

At the turn of the century, a chair like rock sat at the top of the falls and hosted the winner of a local beauty contest.

Indiana's oldest sternwheel paddleboat has been plying the placid waters of Webster Lake for 90 years.

Enjoy classic musicals with a home-cooked meal at this former staple of American social life.

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

Modeled after the labyrinth in Chartres Cathedral, this small-town Indiana memorial labyrinth sits half a world away.

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

Nature and art meet in this curvy creation

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

Lions and tigers and leopards, servals, pumas, bobcats, lynxes, and ocelots... oh my!

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.