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

This scenic Icelandic lava flow is named for a pair of Berserkers who were murdered, according to a famous Saga.

This boat represents the promise of undiscovered territory, a dream of hope, and progress and freedom for Iceland.

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

Legend has it the lovelorn tears of a princess and a shepherd boy formed the blue and green twin lakes in the Azores archipelago.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

The Habsburgs' royal collections of art and wonders.

A set of outdoor stairs named in honor of a famous Austrian artist.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

Baroque celebration of the end of the Great Plague of Vienna.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

The castle used by the Danish Royal Family as a hunting retreat.

This unique architectural wonder is home to luxury apartments.

The highest point in Denmark has been a matter of dispute for over 80 years.

A museum filled with tiny, adorable versions of the mighty Royal Danish Navy.

The world's first combination ski slope and power plant.

Rare karst landscape eroded from a flat seabed.

This 11th-century fortress is now the seat of Aragon’s state legislature.

A somber statue commemorating a Danish merfolk-tale.

This sculptural representation of an Andersen fairy tale had to be pushed away for being too grim.

A public display of random paleontology.

This striking structure, with balconies jutting out like hedgehog spines, combine cutting-edge design with a playful approach to light and space.

Discovered in a peat bog, these horned helms come from a thousand years before the Viking Age.