Victorian-era Egyptomania left its mark on this Nashville landmark.

This defunct, fortress-like prison has been the setting for several movies.

The childhood home of one of Ohio's favorite sons, pilot and war hero Eddie Rickenbacker.

Live long and prosper in Tennessee.

A suspended garden, now gone, once hung in the middle of this abandoned church.

Erosion and time have created a naturally-formed water park.

An enormous natural sandstone bridge in Kentucky.

Taxidermy, Cigar Store Indians, A Model of a New York Tenement and Delicious Draft Root Beer.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Symbolic attempt to overcome the issues of life.

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

The world's longest known cave system.

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

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

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

Colorful collection of antique musical oddities.

One-layer pyramid in Indiana.

The only freestanding table rock formation east of the Mississippi.

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

The lynching and burial site of America's first train robbers.

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

If astronomy had a ghost, it would look like this observatory.

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

A ship that lived many lives under many names is now known merely as the "Ghost Ship."