The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

A museum marks and documents the site of the Titanic's launch.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

Northern Ireland's church-turned-skate park.

The highest peak in Northern Ireland is topped with a stone tower and haunting burial mounds.

A stone wall that mysteriously moved three feet from its foundation.

Obelisks and stone pineapples in the Irish countryside.

A particularly disconcerting tribute to Irish martyrs.

A corkscrew-shaped barn in Ireland.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

Once one of the largest producers of pig iron in the world.

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

This architectural triumph is the only Frank Lloyd Wright house in Alabama.

An oversized metal construction of Billy Tripp's moods going through life.

An unknown Hall of Fame in Jackson, Tennessee.

An engraved boulder marks the spot where Patsy Cline's life ended in a plane crash.

A key producer of charcoal iron in the early 1800s, the structure still stands today.

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

Where beautiful signs live on forever.

The site of William McKinley's tragic assassination is only marked by an underwhelming boulder.

Toxic waste disaster that founded the Superfund program.

Quite possibly the last cross all humans will ever see.

Ruins of a once-prized railroad station in New York.

A natural gas leak provides a flickering flame beneath a waterfall.