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

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

The graffitied ruins stand hidden within the Pennsylvania woods.

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

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

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

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

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

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

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

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

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

Mysterious rocks that ring musically when struck.

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

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

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

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.

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

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

This Portland Art gallery doubles as a studio that supports adults with intellectual and developmental disabilities.

Beyond being incredibly fun, not much can be said about the Hole with certitude.

Oregon's only closed-basin hypersaline lake, an important stopover for migrating waterfowl, is in danger of drying up completely.