This abandoned Antarctic research station is a Soviet ghost frozen in time.

An abandoned outdoor movie theater in the Sinai desert.

Shipwrecks, ruins, and turtles are all that remain on this haunting Caribbean ghost island.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

This replica of the Greek structure is in the heart of Nashville.

The secret city built by the Manhattan Project.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

How this Pine Barrens hill got its name is uncertain, but on a good day the view from the fire tower is crystal clear.

This unassuming retro burger joint was billed as “diner of the future” at the 1939 World's Fair.

This old-fashioned candy shop, ice cream parlor, and diner served as the setting for one of TV's most controversial series finales.

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

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.

A historic observatory precariously perched at the "Top of Europe."

A breathtaking bridge that crosses a vast gorge over a river's torrents, and has a tale of a devil architect attached.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

This amazing pedestrian suspension bridge in the Swiss Alps would give Indiana Jones nightmares.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

The tallest outdoor elevator in Europe rockets passengers on a dizzyingly precarious ride to the top of a mountain.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

Vienna's underworld of tunnels and subterranean rivers made an iconic appearance in a 1949 Orson Welles film.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.