Climb right into the heart of this colorful Iceland volcano.

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

A fantastic reconstruction of a 10th-century Viking longhouse.

A formerly glacier-tipped volcano that inspired none other than Jules Verne.

This mountain fissure hides a secret path to a secluded mossy grotto within the rock itself.

This black church sits alone among a field of lava rock.

Pick up this rock and become an instant legend.

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

This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.

An encyclopedic collection of mammal penises.

This Viking-inspired miniature golf course features a pirate ship and views of Icelandic landscapes.

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

Puffin enthusiasts flock to Europe's largest seabird cliff, which over one million birds call home.

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

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

A spiral staircase connects the limestone cave with Pembroke Castle, birthplace of King Henry VII.

These ancient symbols freckling a Scottish cliff remained hidden for centuries.

These ancient sea caves hold Britain's highest concentration of Pictish rock carvings.

Legend says a witch conjured the world's third largest whirlpool to protect Scotland from a nasty pirate.

Modern megaliths form this work of cosmic, Celtic landscape art.

A scattered trail of street art adds a pop of color to the city's stark structures.

The discovery of this Neolithic settlement, which contained a Stone Age "cathedral," threw archaeologists for a loop.

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.