This one-time health resort was used by aristocrats around the world.

The deepest sinkhole in Central Europe comes with a grisly tale and an unusual nickname: “The Stepmother Abyss.”

Each year melting snow turns these Austrian hiking trails into scuba zones.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

These fantastically named natural pools look like something out of a Scottish myth.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

These delicate sand pyramids look like naturally occurring gothic spires.

Bohemian paradise covered in majestic forests.

This stunning natural double arch, the largest in the Alps, went undiscovered until 2005.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

A natural wonder in south Denmark.

England's most notorious suicide spot.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

It's said the devil used this mushroom rock as a table for a late-night meal.

A remarkable geological formation resembling a forest made of stone.

An intricate and amazing house built by architect Karl Junker.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

In the quiet village of Fulmodestion, the ruins of a medieval church remain hidden among vines and foliage.

A once-magnificent collegiate church is falling into ruin.

The attic of a four-century-old canal house hides a clandestine church.