This popular park is home to a sea serpent sculpture that now overshadows the twisted history of its creation.

A collection of unique outdoor sculptures surounded by the beauty of nature.

This manor in the woods memorializes one of the greatest birders of a generation.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

Visit a replica of the estate where Aaron Burr allegedly plotted a treasonous scheme against the United States.

The only Native American museum along the Oregon Trail, run by the peoples who have lived on the land for generations.

Remember that scene in the Matrix, when Neo is in the big white room with all the weapons flying by? Well, this is what it would look like if he had wanted trees instead of guns.

Over 75 historically themed murals grace the walls of a small Washington city.

Nuclear reactor created the plutonium used on Nagasaki.

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

Two gems of Beaux Arts architecture that have been sitting vacant for years.

This claimant to the title of "smallest church in the 48 states" doubles as an equally tiny, quasi-post office.

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

These unusual rooms on wheels are holdovers from the 1960s.

A diorama of the Civil War, fought by cats.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

A memorial to the Potawatomi chief who allegedly ran nearly 150 miles to alert settlers of an impending attack.

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

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

True to his word, George Swanson is buried in his white 1984 Corvette.

Steepest flood safety railway in the entire world.

Originally a cemetery, this city park remains speckled with a handful of scattered gravestones.

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

A layered tribute to the work of mosaicist Isaiah Zagar.