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

A winding, cliffside stretch of road overlooking the Delaware River.

The largest known open fault in the United States is basically a giant natural refrigerator.

Hundreds of numbered stakes hidden in the woods mark the graves of the lost souls of a nearby asylum.

This forlorn park is the result of a failed investment turned tax dodge.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

Yo, Adrian!

The singer, actor, and activist lived here during his final years, and now it’s a museum dedicated to his legacy.

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

"A hideous albatross in the Hudson River Valley."

A 19th century hat factory still stands as a crumbling ruin in upstate New York.

This abandoned factory on the Hudson River once churned out a million bricks a week.

An abandoned asylum once on the cutting edge of lobotomies may be reborn as a Christian college.

This mouldering abandoned mental hospital was once a center for progressive healing.

The final resting place of the Hollywood star who came to a tragic end.

A retrofuturistic art installation in the Pittsburgh Airport.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

Steepest flood safety railway in the entire world.

This secluded walking trail is a hidden gem of a Pittsburgh park.

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.

A local prank turned town icon.

Its vintage camera collection gives a snapshot of the past as viewed through a photographic lens.

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

America's first serial killer rests in anonymity.