Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

This Romanian village may have been drowned, but it is long from forgotten.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

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

A thin pane of glass keeps visitors from sliding off this futuristic skywalk.

Walk behind a 50-meter-high waterfall.

The convergence of two currents makes this a surprisingly pleasant getaway in the Arctic Circle.

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

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

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

A serpentine highway twists and turns over the treacherous Norwegian Sea.

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

This secret coastal village is studded with pastel-colored houses all piled on top of one another.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

An alien landscape on the banks of the Aegean Sea.

This remarkable cave was discovered after a shepherd watched bees enter and exit through a small fissure.

Thousands of rusting train cars have been slowly falling apart on the edge of Greece's second largest city.

Two churches shoot bottle rockets at each others' bell towers in an unusual Easter celebration.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

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

The hallucinogenic center of the ancient world.

A spectacular cave and a beguiling lake.

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