In legend, this ancient dolmen was said to have been created when a troll tried to destroy a church.

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

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

A unique waterfall that some believe attracts the fairfolk.

A site of pagan worship which still attracts people looking for fairies.

A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.

Bring your hiking shoes, wool socks, and thermal underwear for a stay in these cozy forest huts.

Ancient burial grounds of the wealthy.

Largest island in the Baltic Sea experiences such idyllic weather that roses bloom in the middle of December.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

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

A perfectly circular stronghold constructed in the 10th century is now a nucleus of Viking culture housing a museum, village, and reenactment of an epic Viking battle.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

A surreal museum of extraordinary industrial objects.

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

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

Living trees form the structure of an open-air palace.

Goethe's "Faust" was inspired by these rock formations known as the "Devil's Pulpit" and "Witches' Altar."

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

A beautifully eclectic mix of architectural styles.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A huge Megalithic chamber tomb located behind a cafe.

Folklore and history carved into Brittany's coast.

Medieval Danse Macabre Fresco in Northern Brittany.