Medicinal spa created with the discharge from a geothermal energy plant.

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

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

A restaurant devoted to "trouser grip" wrestling, an ancient form of Viking wrestling that is Iceland's national sport.

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

Iceland's tribute to its thankless civil servants.

First LEED-certified gas station in the United States.

The final resting place of a space program monolith.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

Perhaps the most unique of any Frank Gehry design for one simple reason: Gehry himself actually lives here.

A water tower shaped like a giant coffee pot looms over a small Swedish village in Central California.

The unbelievably opulent home built for an infamous newspaperman.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

Get up close to emus and ostriches, or buy their tasty meat.

The only castle in North America to ever house European sovereigns.

Frida Kahlo's childhood home, now a museum of her life and works.

The only museum with its curator—and her pets—buried inside.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Erotic art covers the walls of the largest ancient pleasure palace.

Ancient snack bar of the Roman Empire re-opened.