This erect, phallic geological spire wasn't always named so domestically.

This Pringle-shaped ledge makes for the perfect photo op.

A railroad lift bridge that was only lifted once and became obsolete before construction was finished.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

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

Chilly air billows out from the entrance of an abandoned mine on a steep hillside, providing a refuge for Ice Age fauna and flora.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

The lowest point in the state of Illinois, at the confluence of the Mississippi and Ohio rivers.

European castle ruins in an American state park are actually the product of death and grief.

This twisty sign depicts the chain's first logo.

This trail leads to a mine that was used as a sanctuary during the Great Fire of 1910.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

A giant time capsule not scheduled to be cored until 2040.

Endless rows of boxes of paper records line the hallways of the archaic federal facility where guns are traced.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

Abandoned businesses, homes, and rusted cars are all that remains of this stopover town.

Two flush headstones mark the only known graves to be embedded in an airport runway.

A statue honoring 44 continuous years of greeting passing ships.

Georgia's highest point was given its strange name thanks to a simple translation error.

This lovely burial mound is actually a replica that was installed after archeologists excavated the original.

A brick-paved former section of the historic coast-to-coast highway.

Part of a secret 1970s nuclear defense program is now open to the public.

A rim-made reptile in North Dakota.