A sulfuric martian landscape that looks far better than it smells.

A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.

Europe’s most powerful hot spring supplies the surrounding region with hot water.

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

Two volcanic lakes in an enormous crater formed in a prehistoric eruption.

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

Rising from the sea like a stone monster.

Surrounded by ash fields in Iceland, an impossibly verdant valley looks like something out of a fairytale.

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

Though they may seem like simple stones, these rocks represent a ghostly legend.

Pick up this rock and become an instant legend.

A little-visited waterfall in an otherworldly landscape.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

One of the largest sculpture collections in the U.K. features history's greats, from Bob Dylan to Galileo, in bronze.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

The enormous earthwork sculpture honors the ponies that lived and worked in the old colliery.

The castle still holds traces of the abandoned Roman fort it was built atop.

This pedestrian walkway cuts through a cemetery and over several burial vaults.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

Restaurant in Northern Wisconsin comes with a unique feature: a grassy roof covered in living goats.