This advertisement for talcum powder was painted on the rock face and has since defied removal.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Time travel with sweets across history at this research-based candy store.

This shale formation along the Appalachian Trail once inspired the third president of the United States.

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

One of the only memorials dedicated to journalists who died in combat.

Memorializing an American tragedy of massive proportions.

This museum is dedicated to the first coast-to-coast highway.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

A larger-than-life statue of America's favorite sundae marks the place it was invented.

A bronze statue of Mister Rogers in the neighborhood where he grew up.

These disused steel furnaces are now haunting ruins that may one day be a national park.

The Paul Bunyan of the steel industry.

This eccentric mansion museum holds a impressive collection of rare and automatic instruments.

A piece of baseball history is preserved in a Pittsburgh parking lot.

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.

This plaque marks a place where one of Hollywood’s most famous dancers got his start.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

Pennsylvania's own Roswell-style UFO mystery.