A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

The industrial monstrosity known as Bagger 258 is a colossal mining machine built in the DDR - but now left for dead in a German field.

The first (but not only) upside-down house in Germany.

One of the most easily accessible examples of the rare 1960s UFO houses.

Ghosts of France's colonial past.

This real life asylum of horrors is now an abandoned ruin that hides the unbreakable code to one patient's insanity.

Austria's very first and only nuclear power station was completed but never used.

This former Cyprus flight hub is now a crumbling, abandoned ghost complex.

A formerly opulent Italian village is now a crumbling ghost town that no one really knows what to do with.

This shell of a historic manor house on the Isle of Wight is said to be the most haunted site on the island.

One of the largest barracks of the Austro-Hungarian monarchy's military is now an abandoned ruin.

This half-finished "city of toys" was almost Italy's own Las Vegas.

This abandoned mining village was predicted to resist decay longer than any other modern human settlement.

This entire town moved to a safe location after it was devastated by an earthquake, but the remains of the original town are still around.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

A deteriorating 1990s Girl Scout camp in a beautiful lush park on Lake Ontario.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

The ruined remains of the airport Claus von Stauffenberg departed in his failed attempt to kill Adolf Hitler.

This ghost town was once a cult-like religious utopian settlement.

An abandoned 1920s-era stretch of cabins now overshadowed by the 66 Motel.

The ruins of an abandoned crematorium haunt an eerie deserted German cemetery.

The tragic reality of a town riddled with rumors of haunts, chemical spills, and serial killers.

An abandoned Victorian-era amusement park is rusting away amidst luxury houses.