Memorializing an American tragedy of massive proportions.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

Pittsburgh's literal underground railroad.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

A museum dedicated to the history & joys of the trail & your best chance to see hikers throwing up ice cream.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

This dramatic rail curve was once the target of a failed Nazi attack.

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

Current docking place of the SS United States, the fastest transatlantic ocean liner.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

There aren't too many operational funiculars around, but Pittsburgh has two!

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

In which a local geological marvel becomes a quaint roadside attraction.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.

A train station that was abandoned by the coal industry and was later converted into a cocktail bar.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

World's first "penitentiary," meant to be humane, drove men insane.

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