This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

Medicinal spa created with the discharge from a geothermal energy plant.

A formerly glacier-tipped volcano that inspired none other than Jules Verne.

The world of the ancient Celtic civilization explained through a bewitching 11 acre garden.

In this truly magical place, rent hasn't been raised since the year 1520.

These 18th century gardens tell a rocky story of the son of Odysseus.

Explore the complex ecology of this multifaceted nature preserve by riverboat.

When the rain falls, this drain system turns into a musical instrument.

Terrifying derelict military hospital once housed a recuperating Hitler.

In paradise, feral pigs have claimed an island all to themselves.

On Japan's Tashirojima Island, cats are king.

This psychedelic tourist trap is a leisurely descent into madness.

A hidden treasure of an abandoned city lies deep in the jungles of Campeche, Mexico.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

Ozymandias’ time-keeping temple.

This crescent-shaped sliver of sand is a magical haven for a herd of feral horses.

An abandoned castle owned and ignored by Masons carries a cursed history.

A spectacular cave and a beguiling lake.

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

This mountaintop lake bubbles and steams in a perpetual boil, thanks to its direct link to the Earth's interior.

Canyon walls shrouded in ferns.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

A 30-acre garden inspired by the principles of modern physics.