A lush indoor jungle fills this bustling Madrid transportation hub.

Commonly acknowledged as the only public monument to the Devil himself.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

Remote, beautiful, and stigmatized, Las Hurdes is Spain's version of Appalachia.

A small town celebrates its cash crop with a giant highway sculpture.

In downtown Oslo, a menacing and terrifying relief clings to a church wall.

A microbiologist-chef is slinging noodles with hyperlocal Nordic ingredients.

Fantastic views and thousands of love locks.

This stunning concert hall has become a symbol of Iceland's national recovery.

A bit of the Berlin Wall was gifted to the Icelandic capital to commemorate the 25th anniversary of German reunification.

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

Iceland's tribute to its thankless civil servants.

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

A formerly glacier-tipped volcano that inspired none other than Jules Verne.

A Wes Anderson-esque lighthouse that boasts magnificent coastal views.

This mountain fissure hides a secret path to a secluded mossy grotto within the rock itself.

This black church sits alone among a field of lava rock.

This beautiful, historic church looks like something out of a simpler past.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

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

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

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.