An abandoned lighthouse awaits its destiny: being buried under shifting sand.

Walk 2,300 feet above the ground on the "Troll's Tongue."

This giant boulder is pinched over a 1000-meter abyss by two mountains.

Walk behind a 50-meter-high waterfall.

A stunning silver lining to global warming's gloomy cloud.

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

Each year a new straw behemoth is born.

This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

This hospital once pioneered the use of electroencephalograms, but fell into maltreatment, abuse, and eventual abandonment.

The decaying ruins of Wales' first asylum for the mentally ill.

Abandoned ship reimagined as a street art canvas.

A museum devoted to the science of color.

19th century tunnels burrowed under Liverpool.

Giant statue of a disembodied head.

Celebrated example of Ottoman architecture that also served as a site for brutal massacres.

Place with alleged mystical powers in Old Orthodox Church in Sarajevo.

A forgotten monument to Yugoslavian freedom.

A musical instrument played by the sea.

An ethereal glowing blue ocean cave in Croatia.

Monasteries on rock pillars, once accessible only by frayed ropes.

A naturally beautiful, seemingly bottomless deep blue spring.

What happens when you cross a mayor and a painter?