An opulent testament to the boom-and-bust history of industry in north central Indiana.

Extraordinary sculpture garden created by an eccentric English poet.

An otherworldly musical haven in The Big Easy.

The Grand Canyon of Texas.

Installed as a beacon of hope for a hurricane-racked island, the statue had to be moved multiple times due to the eroding coast.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

A museum of unusual collections, mini-towns, and a half-dog, half-alligator.

The crumbling remains of a 19th century fortess.

This strange, small castle on the bayou has withstood the test of time and weather.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

Railroad came. People came. Railroad left. Town died.

A mountaintop space observatory that is certified dark.

A 315-foot spire jutting out from the Blue Ridge Mountains makes for breathtaking views.

A museum celebrating rare American motorcycles where everything runs—and none of it quietly.

The remains of the iconic train crash from the movie The Fugitive can still be found rusting along the Great Smoky Railroad.

Hidden amid a collection of trails is the site of a tragic crash.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

The art studio of an early 20th-century painter, hidden amid the Great Smoky Mountains.

An abandoned town is hidden in Great Smoky Mountains National Park.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

Enormous lake at the bottom of a unique cave system.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.