This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

A local prank turned town icon.

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

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

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

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

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

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

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

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

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Destructive children, start your engines.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

The final resting place of a famous 19th-century murder victim whose identity is still a mystery.

American involvement in World War I officially ended in 1921 in New Jersey, three years late and thousands of miles from the battlefield.

World Trade Center memorial likened to a woman's sexual organ.

Local lore claims this park is named after a young woman who jumped off a cliff.

The remains of a century-old mansion that met a fiery demise years after it was deserted.

A recently abandoned psych ward at the end of Sanatorium Road.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

A storefront museum in Asbury Park honoring the Jersey Shore’s deep history of mystery—including the Jersey Devil.

Series of storm drains connected to a dark urban legend.