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

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

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

Three columns of volcanic rock shoot out of the ocean.

A trio of hidden hot tubs takes advantage of Iceland's natural geothermal vents.

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

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

The oldest church in Iceland is one of the few to feature ornate decoration.

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

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

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

A winding, blood-red tunnel of hardened lava navigable by foot.

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

The most powerful waterfall in all of Europe.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

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.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

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