Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

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

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

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

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

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

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

A layered tribute to the work of mosaicist Isaiah Zagar.

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

A toxic ghost town sitting atop a massive coal fire.

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

This former asylum for Black Americans is haunted by its history of violence and racism.

The 320-year-old tree that greeted General Lafayette and rerouted an interstate highway.

An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

A hidden alley in urban Baltimore is a haven for graffiti artists.

This abandoned sea fort has become an accidental bird sanctuary.

The land is home to swimming ponies and a legendary 18th-century treasure.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

A massive forgotten storehouse from 1913 on the Brooklyn Waterfront has a spectacular view of Brooklyn.