Moss and stone turn this waterfall into an otherworldly liquid veil.

Sloth rehabilitation center in the jungle of Costa Rica.

Giant, pink stuffed rabbit on an Italian mountain.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

The drama of nature in full effect in this Nevada State Park.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

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

Friction between grains of sand cause a curious "singing" sound.

A mysterious light floating in the trees of Arkansas may be a piezoelectric effect.

The curious underground history of keeping Paris clean.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

Isolated atop this Balinese sea crag is a lovely Hindu temple that is said to be guarded by sea snakes.

2300-year-old Roman road connecting the empire.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

A bigger-than-life pun that has become a beacon of altruism.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

"Only the devil could play golf here."

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

Abandoned city hidden from the world by tropical forest and isolation on the coast of Kenya.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

Where manatees are the snowbird vacationers in these balmy Florida springs.

100-year-old shipwreck you can walk up to at low tide.