This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

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

Perhaps the most spectacular grotto along the Algarve coastline.

A unique seaside cave where Aleister Crowley faked his own death.

The unusual patterns in this rock formation result from two distinct modes of weathering.

One of Europe's largest supercomputers is housed inside of a disused chapel.

This quiet park's strange sedimentary spires were named after Kodak's color film.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

Most-visited and most-photographed slot canyon in the American Southwest.

A striking, menacing sandstone peak towering above a landscape that's equal parts Mordor and the Moon.

This former military airfield's claim to fame came from a lucky accident during the Second World War.

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

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

The most powerful waterfall in all of Europe.