A gargantuan crystal kingdom.

An isolated dive site teeming with cnidarians.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

The atmospheric road was never meant to be so creepy.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

A fiery crater has been burning in the Karakum Desert since 1971.

The rocks in this arid basin leave trails of movement behind them.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

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

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Rippling sand dunes frozen in the Arizona rock.

The magical, mossy forest that inspired Princess Mononoke.

The world's first cruise ship-shaped hotel is perched atop a cliff.

A winding, blood-red tunnel of hardened lava navigable by foot.

One of the most remarkable caves in all of Iceland was created by a once raging river of lava.

Turnip-shaped island just off the Michigan shore in Lake Huron.

An eerie maze of industrial factories looks like something out of a dystopian sci-fi.

A strange tribute to all the fallen souls of war.

We heard you like volcanoes so we put a volcano in your volcano so you can die for sure...

The third-tallest statue in the world depicts the "Buddha of Infinite Light," complete with observation deck in his chest.

Steaming blood-red hot spring from hell.

A 70-foot-deep ice cave formed by lava from Mt. Fuji on the edge of Japan's "Suicide Forest." 

Enormous underground chamber built to detect 'ghost particles' of the universe.