On Nobel Street, a miniature statue of Alfred Nobel.

The center of Stockholm can be found along this quiet street.

The 19th-century home of Count and Countess von Hallwyl is now a museum.

Every Tuesday, students let off steam by screaming into the night air.

Sound travels strangely in this underground whispering gallery.

The single richest source of elemental discoveries in the world.

No one knows who's responsible for decorating this tunnel with stuffed animals, but the people love it enough to protest their removal.

Stockholm's deepest subway station is also a stunning ecological wonder.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

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

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

A black sand beach where glacial fragments wash ashore and look like sparkling diamonds.

A geothermal pool in North Iceland that is said to be the bathing spot of the legendary Grettir the Strong.

A replica of the decorated wooden pillars Viking sailors threw overboard when finding new places to establish a settlement.

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

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

This oceanside Reykjavik spot is speckled with recycled sculptures and large stones.

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

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

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

The most powerful waterfall in all of Europe.

Walk in the footsteps of the gods and straddle two tectonic plates.

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