The abandoned coal loading dock is a canvas for unsanctioned art.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

The graffitied ruins stand hidden within the Pennsylvania woods.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

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

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

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

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

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

A toxic ghost town sitting atop a massive coal fire.

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

A layered tribute to the work of mosaicist Isaiah Zagar.

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

A whopping 14,000 copper coins cover this miniature fighter jet.

This sprawling museum holds one man's giant collection of real tanks.

Lines from a walking song are etched into a rock in Natural Bridge State Park.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

This is probably not the Target you're looking for.

A massive collection of rare and antique books in a tiny ranching community in northern Texas.

Artist James Turrell's ode to dawn and dusk on the campus of Rice University.

The man who wasn't there.

The 19th-century ruins hide deep in an overgrown forest.