A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.

Travel deep inside of Europe's second largest glacier in the world's largest man-made ice cave.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

Surrounded by ash fields in Iceland, an impossibly verdant valley looks like something out of a fairytale.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

A little-visited waterfall in an otherworldly landscape.

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

This fantastical waterfall is hidden in a cave located in a cracked cliff.

Rising from the sea like a stone monster.

The largest underground lake in Europe.

These spooky and unusual stone formations create an underworldly landscape.

Caves famous for the dragon-slaying saint who lived there.

The largest cave in Northern Europe.

A naturally occurring tunnel in this Nordic mountain makes it look like it's been shot.

Thousands of years of crashing waves gave this mushroom-shaped rock its svelte figure.

In the heart of Luxembourg's "little Switzerland" weaves a breathtaking natural sandstone canyon with a mythological past.

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

The mile-long pier stretches from a ruined fortress out into the Baltic.

These abandoned vessels are destined to be reclaimed by the forest.

The widest waterfall in Europe is a natural wonder and one of the only places where fish are caught in the air.

The only natural cave bath in all of Europe.

Take a hike to this unique rock formation formed by lava flows.

The massive white mound and accompanying water terraces are a striking geological oddity.

This lake-bound geographical marker sits at the point where three European countries intersect.