The snowbirds here are circus sideshow performers.

A building so large that it has its own weather.

The third tallest lighthouse in America once guided author Stephen Crane to safety.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

An abandoned munitions factory with a shot tower continues to wage war on the surrounding environment.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

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

These early tent-shaped grave coverings are unique to Appalachia.

The world's longest known cave system.

One Confederate statue that accurately reflects the ugliness of its subject.

A "Texanic" (gigantic Texas) collection of Art Deco architecture at Dallas' historic Fair Park.

This downtown Dallas art installation is always on the lookout.

The man who wasn't there.

Belly up to the bar in Cowtown, don't forget to buy some boots.

An office built to look like a giant basket.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

A real flying saucer, contracted by the U.S. Air Force.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

A modernist landscape of water and sci-fi concrete.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

The secret city built by the Manhattan Project.

This North Carolina museum is keeping the pinball craze alive, with a little Space Invaders on the side.