This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

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

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

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

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

A rare view of a preserved Victorian science museum.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Mysterious rocks that ring musically when struck.

Where America's first doomsday cult awaited the end of the world.

A toxic ghost town sitting atop a massive coal fire.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

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

A replica of the first seismoscope ever invented.

This once-booming oil city is now a relic of the region's industrial past.

The earliest pagoda built in the beautiful Panmen Scenic Area of Suzhou.

Though these human-made islands were constructed as an escape for the wealthy, they rarely see many visitors.

A prestigious learning institute of old Shanghai.

This bridge dates back to the 9th century and allows visitors to walk an ancient path amid modern industrial trappings.

A shrine to the missionary who first brought Islam to China.

These picturesque structures speckle the hill above the monastery.