After covering almost 1.5 billion acres, the survey's still not finished.

The site of the worst mining disaster in Ohio's history.

The headquarters of a pioneering cast iron and cast aluminum cookware company is in ruins, but still standing.

A rare particle accelerator with a tremendous energy range is tucked away at Ohio University.

The childhood home of one of Ohio's favorite sons, pilot and war hero Eddie Rickenbacker.

When a guy acquired a free church, he hauled it away piece-by-piece to make it the tasting hall at his vineyard.

This historic Ohio bridge is adorned with fanciful locks left behind by loving couples.

In northern Ohio, the glorious past of America's trains is on full display.

A bronze monument to Cleveland's favorite, fastest son.

The nearly 200-year-old building displays a perplexing grammatical error.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

The former broadcast site has been reimagined as a museum about the medium.

A 30-foot stack of piano keys memorializes one of the greatest keys players in jazz history.

A jukebox headstone marks the grave of the Cleveland disc jockey credited with coining the term “rock 'n' roll."

This unincorporated community in western Ohio got its peculiar name from John "Daddy" Baker.

"You can only scalp a customer once, but you can give him a haircut every two weeks"-Barber's Maxim.

A lost cemetery stands forgotten on a hilltop, known only to the older residents of Pomeroy.

The crash of this great airship signaled the beginning of the end for dirigibles.

Evidence from a brutal 1880s murder is on display at this former infirmary house.

The only depiction of Abraham Lincoln holding a weapon, and the names of all 9,000 Cuyahoga veterans of the Civil War.

This bridge uses an inverted bowstring truss and is believed to be the only of its kind in the United States.

Memorials and tributes scattered across the university grounds remember a famous national tragedy of the Nixon era.

A small town museum celebrates the history of the Ohio county that produced Annie Oakley and other famous figures.

Artifacts fill the old headquarters of the hugely influential political movement to ban alcohol in the United States.