River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

The first full-scale tunnel built in America is short but scenic.

The hometown of Popeye's creator is littered with a growing collection of granite cartoon characters.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

A museum dedicated to man's boldest venture.

Where the author wrote her beloved "Little House" books.

Twenty-year effort to raise a castle using tools and techniques from the 13th century is now abandoned in the Arkansas woods.

In the loving memory of a tragically deceased role-player this Illinois park is decked out with both dungeons and dragons.

An enormous natural sandstone bridge in Kentucky.

A hillbilly theme park that proved so unpopular the land wouldn't even sell on eBay after it closed.

An ever-growing collection of rare and strange objects owned by local Arkansas illusionist Maxwell Blade.

Even with its slightly risible name this colossal cross is still able to inspire awe.

This simple gravestone remembers a pig who single-hoofedly raised $19,000,000 for the Navy.

Crumbling Kennedys and a decaying Tecumseh are just some of the haunting remains of one man's cement art trail.

The terrified face of Henry Wells is etched on this garret window.

Planes, trains, and automobiles have all been sunk as attractions at this Illinois diving spot.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.

Local legend says that someone is buried in the trunk.

Town not known for anything except its strange name.

An abandoned early-20th-century boomtown sits within the Calico Rock city limits.

This simple, broken column marks the final resting place of one of America's most famous explorers.

This historic bridge has weathered fires and floods and still stands, now abandoned, where it has stood since 1874.

Everyone and everything one man ever loved and lost, now stare into the East for all eternity.

This one-room schoolhouse in rural Arkansas dates to the 1920s, but looks like it could be the 1820s.