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

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

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

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

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

This icon of the Atomic Age now lays dormant.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

This one-room cabin where the young colonel slept during the French and Indian War.

This alley-cum-fan gallery in the ex-Nirvana drummer's hometown holds the world's largest drumsticks.

A grandiose title could not save this mercantile community from obscurity.

Mausoleums, astronomy, and animatronic dinosaurs at this memorial to an assassinated American president.

Ohio's 19th-century communist micro-society.

There are more than 4 million bricks inside this unofficial Lego museum in a former middle school.

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

This former fire tower found new life as a communications hub complete with a scenic overlook.

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

The ruined remains of a coal mining ghost town are hidden within the woods.

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

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

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

The brainchild of Eleanor Roosevelt, her "Little Village" was a collectivist dream.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.