A haunted hot springs hotel that went from healing retreat to asylum before it was restored.

An abandoned relic of the city's failed experiment with below ground transit.

The remnants of an early American attempt at missile defense.

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

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

This amazingly preserved Gold Rush town is a historian's dream.

A Beaux-Arts triumph set to become Ford's innovation campus

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

During the 1990's nearly all of the world's LSD is thought to have come from the operators of the lab once located in this missile silo.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

Abandoned silver mine strewn with wrecked and twisted structures.

This former luxury resort in Kaua'i is now an abandoned relic.

The beauty of urban decay, hiding some dark secrets.

The largest lake in the Faroe Islands seems to be held hundreds of feet above sea level thanks to an optical illusion.

This Old Testament garden features 100 plants from biblical times.

Within this beautiful Pittsburgh cemetery, a unique headstone bears witness to one man's eternal love for Jaws.

Rare recess caves fill this unbelievably beautiful Ohio park.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

Tasked with beautifying a disused stretch of industrial land one artist filled a hole with grass.

One man's swirling six-acre monument of stone.

This massive geographical sculpture is so subtle, it's possible to pass by it without noticing.

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

Catch a ride through the Pennsylvania countryside on this historic narrow-gauge railroad.

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.