It houses the remains of a 17th-century version of the Titanic.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Housed in a former convent, this museum has a collection of religious art, artifacts, and scientific objects that offer insights into the island's spiritual, cultural, and intellectual heritage.

This waterfall, also known as the “the castanets” is said to mimic the sounds of the waves in Portugal.

This Castilian castle has stood the test of time like few others.

A private collector gathered these sound machines and musical instruments across five continents.

Built between 1901 and 1908, this building is one of the most iconic examples of modernist architecture in Spain.

Europe's largest river aquarium features freshwater species from around the world.

The first museum in Europe dedicated to the art of origami.

This parody of ecclesiastical cloisters features famous figures from the 20th century.

You'll need a microscope to see some of the minuscule masterpieces in this modest museum.

A place steeped in history that may be best known as the set of a 1960 film.

This cuddly-looking statue symbolizes the bond between Spain and China.

This set of Berber granary caves is now an interpretation center for the cave window structures in the Clarino valley.

The geomorphology of the Turia Valley could easily be mistaken for Utah or Arizona.

These 7,000-year-old cave paintings depict life in Neolithic Spain.

An ode to the famous Las Vegas signage.

This fantastic sculpture of an early model helicopter celebrates the local toy industry.

Dedicated to one of the author's most iconic works.

An enormous roadside attraction in the heart of Spain's toy-making hub.

An underground spring in a labyrinthine cave system, decorated with stalagmites and stalactites.

This centuries-old tower hosts endangered bald ibis mating pairs and looms over a pristine beach.