An ideal wedding spot that is almost too ideal.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

This historic old movie house was the scene of one of the Blob's most iconic attacks.

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

A daily replay of the experiment that proved the rotation of the Earth.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

An otherwise quiet campground becomes a bustling medieval town for two weeks every year.

This collection honors the iconic, and proudly American lighter that just won't quit.

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

America's first serial killer rests in anonymity.

The mortal remains of a Russian prince, priest and paranormal investigator who came to America in 1792.

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

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

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

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

It would take 35 firetrucks to fill this enormous glacial pothole.

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

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

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

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

The home and studio of a visionary woodworker now stands as a museum and example of his artistic genius.

This park contains a number of standing stones meant to heal and inspire.