Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

More than five miles of underground passageways.

The first space rock known to have struck a human.

These ruins are all that's left of the former Alabama State Capitol.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

This hidden jockey “walk of fame” celebrates the winning riders of the Kentucky Derby.

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.

The oldest operating Mississippi River–style steamboat still navigates the Ohio River.

This abandoned cemetery has a dark past of bodies buried over bodies.

The grave of the iconic Kentucky Fried Chicken mascot features a bust of the man behind the goatee.

The largest cemetery in Louisville is the final resting place of Col. Sanders and Muhammad Ali.

One of the greatest boxers and humanitarians to ever live chose his hometown as his final resting place.

Unique and somewhat surreal, this little girl's memorial depicts a playful Jesus.

A life-sized memorial to Harry L. Collins, the official corporate magician of Frito-Lay.

The simple gravesite of a Romany clan leader is dotted with offerings, including cans of her favorite drink, Crush orange soda.

The whimsical construction on the roof has given rise to many a Montgomery myth about its contents.

Intertwined, interspecies trees which locals believe can grant boons to lovers.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

Elvis's own personal tropical hideaway.

This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

The world-record holder for the longest bridge stretching continuously over water.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

The second-tallest water tower shaped like a peach in the American South.

One of almost 200 confirmed impact craters in the entire world, untouched for tens of millions of years.