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

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.

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.

This ghost town houses the remains of Alabama's old state capital.

A collection of huge Pre-Colombian structures in Alabama.

A rusted metal giant pays tribute to Birmingham’s industrial past.

The former home of the hard partying literary power couple is now one of the only museums devoted to their story.

This architectural triumph is the only Frank Lloyd Wright house in Alabama.

The highest point in Alabama was almost completely deforested, but is now home to protected towers and trees.

You'll need cowboy boots to trek to this old-fashioned saloon nestled in a giant natural cave.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

148 feet long and in the middle of a verdant forest.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.