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

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

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

It is said a heartbroken man visited the gap every day to stare blankly out at the sea.

This Italian-style temple replica has been threatening to fall off the Irish coast for hundreds of years.

A museum marks and documents the site of the Titanic's launch.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

The atmospheric road was never meant to be so creepy.

Northern Ireland's Brobdingnagian stepping stones.

The world's tallest palm trees look like the whimsical kind of plant you'd find in a Dr. Seuss story.

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.

The ruins of an ancient stadium that hosted gripping chariot and horse races.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

An ancient neolithic tomb that only sees the sun twice a year.

The ancient tomb acts as a calendar that keeps perfect time.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

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