This ancient tunnel is one of the most important examples of Roman hydraulic engineering in Spain.

This enormous censer uses a pulley system installed over 400 years ago.

The atmospheric ruins of a historic church can be found on a hill above the city of Oviedo.

This 19th-century fountain's namesake animal isn't what you think it is.

An impressive home made of stone, carved more than a century ago.

An early 20th-century bullring converted into a modern shopping center.

An out-of-place grove of sequoias thrives in northern Spain.

This fascinating and poignant museum chronicles every imaginable aspect of Spanish colonialism in the Americas.

"Satisfying" is a good way to describe these beautifully aligned rows of Spanish mills.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

A historic Christian shrine nestled within a spectacular natural cave.

Blue-green pools and smooth stones comprise one of Spain’s most idyllic hidden wonders.

A complimentary beverage is offered to the bodega's resident rodents every day.

The effect of this ancient form of image projection situated atop an 11th century Moorish palace is thrilling.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

This enchanting natural park is a magical example of a temperate rainforest in Europe.

Beautiful tiles decorate many of the town's surfaces and stand testimony to its glorious artistic history.

This mountaintop observatory is home to one of the world's largest reflective telescopes.

This enchanting hamlet carved into the rock looks like something straight out of Tolkien's Rivendell.

A five-square-mile slice of Spain on the Mediterranean coast of North Africa.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

Geological storytelling.

Volcanic rocks ground down into sand make this Spanish beach as black as night.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.