This crumbling UFO is one of only a few remaining "moveable ski chalets" of its kind.

Odd outsider art installations surround a Gold Rush-era ghost town.

A crumbling hospital from the 1850s on Roosevelt Island.

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

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

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

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

Built by the inventor of the radio, this abandoned hotel has housed early radio employees, military men, and a dangerous cult.

These mouldering mansion ruins remember a time when the Catskills were nothing but luxury.

The ruins of a Florida miracle spring resort make it seem like a wonder that this was ever a health spa.

The top of society once luxuriated in this world-class hotel, which continues to impress, even in ruin.

A once-luxurious, now abandoned hotel in the Italian Alps.

The abandoned remains of this once-thriving hotel looms over the city, awaiting an uncertain future.

This eerie abandoned building with a dark history is said to be one of the most haunted places in the Philippines.

This magnificent abandoned hotel has long been haunted by its Nazi past.

An abandoned resort in North Macedonia is a relic from the Communist Party of Yugoslavia.

The decaying remains of a once-luxurious Soviet spa town.

The abandoned ruins of a failed resort hide on this verdant, picture-perfect island.

A 1970s resort city now stands abandoned, caught in the middle of a divided island.

An abandoned beach resort in Normandy reclaimed by artists.

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

A forsaken beachfront condo abandoned after the Boxing Day Tsunami.

The now-overgrown beach resort was once frequented by Yugoslav military elite.