A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Paris' linguistic guide to the international language of, yes, love.

This massive library holds what was once the largest book collection in the world.

The oldest stone house in Paris was built by its most famous alchemist.

At this museum in Iceland, visitors can sample fermented Greenland shark.

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

The bright red stripes streaking across the rocks are the star feature at this Icelandic waterfall.

A giant red chair bolted to a rock on a remote mossy hillside in Iceland.

These enlarged egg sculptures represent the native birds of eastern Iceland.

Iceland: home to volcanoes, waterfalls and, apparently, Santa?

An isolated, rusty phone booth commemorates Iceland's first international telegraph cable.

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

This collection of unique liquids allows visitors to wander the waters of Iceland's glaciers.

These concrete domes were installed on an Icelandic bluff to honor a very specific musical tradion.

This fairytale-like structure is the last turf church ever constructed in Iceland.

The summer tourists on these cliffs are thousands of seabirds.

The oldest steel ship in Iceland has been beached for years and is now a rusting ruin.

A little-visited waterfall in an otherworldly landscape.

Every summer local children form "pysja patrols" to save young birds that have wandered from their nests.

This tiny museum's sizable collection is jammed into a former underground public toilet.

The largest whale museum in Europe allows visitors to walk among life-size giants.

This wrecked airplane has been sitting on a black sand beach since the 1970s.