Shrine to Japanese water-goblins, complete with their preserved body parts.

Site full of incredible prehistoric paintings and archeological findings.

An underwater city for the dead.

The Yonaguni Monument, a natural formation or the Japanese Atlantis?

Secret North Korean passage discovered below the world's most dangerous border.

The unique ecosystem atop an Australian mountain is home to some colorful inhabitants.

Even King Tut was intrigued by the glass of the Great Sand Sea.

These azure waters were thought to lead to the Mayan Underworld.

An ethereal glowing blue ocean cave in Croatia.

The abandoned Japanese amusement park once loomed as a dystopian Disneyland.

An ancient city exhumed from the depths of the ocean.

Plundered and left asunder by grave robbers, this ancient necropolis has been painstakingly pieced back together.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

Do these monsters look familiar? The gargoyles on this church are all from pop culture.

Stone shrouds of Prince Liu Sheng and Princess Dou Wan of the Han Dynasty, created to preserve their flesh for eternity.

One of the final concrete ships built before World War II is now a crumbling breakwater.

A historic observatory precariously perched at the "Top of Europe."

Iron Age grave stones and Viking burials, a short drive from Gothenburg.

Submerged trees jut ghost-like out of an idyllic turquoise mountain lake.

An enormous, 30-story-deep hole in the middle of Guatemala City.

Where an entire elephant skeleton, a snakeskin table runner, and thousands of animal remains become art.

A lake in the middle of the tundra of Quebec is said to be the purest freshwater lake on Earth.

An Australian lake whose pink hue defies scientific explanation.