The final home of the most famous horse of the American Civil War.

A preserved 18th century homestead in Western Pennsylvania marks the spot where the Whiskey Rebellion began.

A museum commemorating the Donora Smog, which killed 20 people in October 1948 and sparked national outrage over air pollution.

Spectacular mineral formations fill these caves, which have been used for everything from smoking meat to stashing illicit liquor.

A suspended garden, now gone, once hung in the middle of this abandoned church.

The largest earthwork effigy in the world.

Housing the history of a small Ohio town that is known to some as the pottery capital of the United States.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

See the nearly two-century-old ruins of pre-railroad America at the former site of a lock on the Ohio and Erie Canal.

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

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