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

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

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

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

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

The most powerful waterfall in all of Europe.

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

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

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

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

A beautifully eclectic mix of architectural styles.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

The summer tourists on these cliffs are thousands of seabirds.

Climbing Iceland's highest peak on the rim of the Oræfajökull volcano.

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

Three columns of volcanic rock shoot out of the ocean.

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

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

Manchester's abandoned train depot lingers in a post-industrial purgatory.

This preserved puppy was an adorable beacon of charity.