400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

A collection of 11 million buttons illustrates the human toll of the Holocaust.

Steel remnants of a bridge make up a unique sculpture along the banks of the Illinois River.

While he no longer has an eatery to give him context, this off-brand Paul Bunyan still holds his giant hot dog with pride.

The world's largest covered wagon is piloted by a giant Lincoln lawyer.

Today this bizarre rooftop phone booth seems like a piece of kitsch but it was once used to spot disastrous storms.

The empty tomb that houses the memories of Roy Bertelli's revenge.

The original vault that held the president's remains still stands, empty, not far from where he was finally buried.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

Built in 1869, this now-retired structure looks more like a medieval fortress than a county lock-up.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

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

Oversized statues are just the tip of this nostalgic Americana roadside attraction.

This lagomorph-obsessed Route 66 emporium is home to a giant jackrabbit that sits in a bunny graveyard.

Buy a token from the liquor store and you can make this beast spew flames on command.

This historic lavatory leftover features two levels of defecation stations completely without context.

The multinational Burger King chain is banned from operating within 20 miles of a family restaurant filed under the same name.

The final resting place of the hero of Air Florida Flight 90 known as "the man in the water."

This folk art wall claims to be the world's one and only memorial to the bygone age of hippies.

The legacy of an unsolved, gruesome murder rests beneath the spans of this historic bridge.

Even with only two residents and one building, this tiny Illinois town is famous for its burgers.

This grave in a ghost town cemetery marks the death of a witch on a day that never happened.

The world's largest collection of the world's largest objects is in one small Illinois town.