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 abandoned five-star hotel is now a five-star urban exploration destination.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

An intricately carved Viking church overlooks a glistening fjord.

The damming of the Colorado River buried an iconic geologic formation before record-breaking drought brought it back.

The heads of two giant mythological water horses honor Scotland's horselord past.

A nostalgic bibliographic gem.

Wander down a side street dedicated to one of the members of the Beat Generation.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

A turquoise lake within a volcanic crater.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

A swing to dangle you off the very edge.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

The final resting place of soldiers' loyal canine companions.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

A 18th century graveyard and its astonishing cortege of macabre iconography.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.