One of Cincinnati's greatest fighters once trained at a now defunct gym in this Over-The-Rhine neighborhood.

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

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

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

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

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

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

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

Rows of 19th-century brick ovens used to process coal into coke form the center of a wooded park.

One of the few places where you can explore a 1918 paddlewheel steamboat from stem to stern.

At the center of this cemetery stands a 2,000-year-old burial mound of the Adena culture.

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

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

Hundreds of 19th-century characters descend upon an Ohio town every autumn.

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

Remnants of 19th century vigilante justice.

Hidden on two floors of downtown building, the library has an incredible deal on rent.

An abandoned munitions factory with a shot tower continues to wage war on the surrounding environment.

A headstone tells the sad story of a lost little boy and his pet dog.

This moving cemetery sphere is a slowly rolling stone.

Featuring one of the most complete and original collections of Presidential memorabilia, this is the site of the last front porch presidential campaigns.

This massive airship factory is so large that it has its own indoor weather.

Now in disrepair, this 19th century station was a stop on of the famed B&O Railroad.

Ohio's 19th-century communist micro-society.