A piece of crumbling highway infrastructure was repurposed as a high-tech facility for testing racecars.

An abandoned stretch of highway, deteriorating next to the operational one.

A dozen U.S. presidents have stayed at the historic resort, which was known as James Buchanan’s “Summer White House” from 1857-1861.

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

This one-room cabin where the young colonel slept during the French and Indian War.

One of the last few period-correct, hand-operated canal locks in the country.

How did a former First Lady's tiara wind up being sold to a pawn shop on reality TV?

The land is home to swimming ponies and a legendary 18th-century treasure.

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

A former Canadian automobile ferry mysteriously appeared in the Black River 20 years ago, and now it quietly rusts away.

This underground holding cell was forgotten for over a century and rediscovered in the 1960s.

The remains of a massive blast furnace in what was once one of the country's largest iron-producing regions.

What started as a display of antique hearses has grown into a museum exploring the history of the funeral industry.

Dozens of striking Indian symbols cover the second-floor hallways of this rural courthouse.

The final resting place of one of the most iconic musicians of the '80s.

Home to several unusual artifacts, including a huge painting of George Washington.

Smoky, also known as "Yorkie Doodle Dandy," was a four-pound hero of World War II.

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

This schoolhouse for Black American children is one of the oldest remaining in southeastern Ohio.

The inventor of the iconic Pringles can was so proud of his invention he was buried in one.

A memorial for an outsider theorist who believed that the planet is actually hollow.

An unassuming 13-acre park is home to over 12,000 roses.

A monument to a Native American leader who was known for never breaking a promise and met his end after signing a deal with white settlers.

Mussolini gave Cincinnati a bronze statue of Romulus and Remus suckling at a wolf's teats.