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

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

An encyclopedic collection of mammal penises.

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

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

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

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

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

A thin pane of glass keeps visitors from sliding off this futuristic skywalk.

Walk behind a 50-meter-high waterfall.

Longest road tunnel in the world features an air treatment plant and the illusion of daylight.

Mound of stones marking the burial site of the world's most famous orca.

Walk 2,300 feet above the ground on the "Troll's Tongue."

An intricately carved Viking church overlooks a glistening fjord.

A stunning silver lining to global warming's gloomy cloud.

A serpentine highway twists and turns over the treacherous Norwegian Sea.