A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

A musical instrument played by the sea.

This massive subterranean fissure is known as the "underground Grand Canyon."

A whimsical bridge adorned with decorative dragons.

An otherworldly alpine pasture in Slovenia with historical ties to WWII and architecture that recalls Middle Earth.

An unmistakable facial pareidolia in the Julian Alps also includes a fantastic tale.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

This secluded Iceland farm holds the collected works of one rural sculptor's creations.

The narrow passages will challenge even the bravest driver.

Despite finally receiving electricity in 1970, this tiny town is now deserted.

Rising from the sea like a stone monster.

Outlaws, hot springs, and tragedy have all left their mark on this ancient road in the Icelandic highlands.

This canyon is comprised of gorgeous waters and magnificent basalt columns.

Two volcanic lakes in an enormous crater formed in a prehistoric eruption.

This excellent museum recreates the boom days of the herring rush in the "Atlantic Klondike."

A little-visited waterfall in an otherworldly landscape.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

This elegant arc of a waterfall marks a religious turning point.

These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

This tumultuous Icelandic lava field looks so alien European researchers want to use it as a stand-in for Mars.

The most powerful waterfall in all of Europe.

Europe’s most powerful hot spring supplies the surrounding region with hot water.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.