A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

A humble homemade ride attracts visitors from around the globe to this small Midwestern town.

One-layer pyramid in Indiana.

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

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

At 431 feet and 10 inches, this is the longest historic covered bridge in the United States.

A small rural town hides Indiana's tallest waterfall.

This former mill tunnel was blasted under the ridge to divert a portion of the Muscatatuck River.

Inspired by a piece of concrete, these three pyramid-shaped buildings have been beloved Indianapolis landmarks for over 50 years.

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

This rock formation above the Wabash River is part of an ancient coral reef.

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

A set of tall pillars and alcove-like rooms that are significant to the Miami people of Indiana.

The overgrown remains of one of the premier auto-racing speedways in the Midwest—and also one of the most deadly.

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.

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

One of the few authentic Japanese gardens in the state of Indiana and perhaps the most peaceful place in the city of Mishawaka.

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

The first artificial white water river course in North America cuts right through an Indiana city.

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

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

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

Symbolic attempt to overcome the issues of life.

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