An arresting arch punched straight through a mountain provides one of the most scenic spots, and challenging climbs, on the planet.

An automaton perched above an classic clock and watch store

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

This huge abandoned fortress hidden inside a mountain holds a world of subterranean secrets.

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

Stormy conditions send jets of seawater bursting through holes in the cliffs.

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

This influential Renaissance-era library was once the haunt of kings and monks.

The streets of a sleepy Spanish town proudly exhibit some of the world's finest graffiti.

This surreal-looking tree pruned more than 1,000 years ago is still producing olives for oil.

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

This local emblem is the oldest and largest dragon tree in the Canary Islands.

A huge cathedral single-handedly constructed by one eccentric monk.

A magnificent, long-abandoned castle built in the wake of the reconquest of Spain.

A unique exhibit lets blind people experience famous works of art and architecture with their hands.

A beautiful little museum hidden away in the heart of Barcelona holds a treasure trove of Ancient Egyptian artifacts

A whimsical garden of outsider art in the Spanish countryside.

This colorful statue welcomes visitors to a Barcelona park.

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

Geological storytelling.

An impressive display of ships and artifacts from the ancient Mediterranean maritime trade.

A model solar system adds a celestial touch to this suburban park.

A breathtaking and biodiverse wilderness in the mountain setting of Ernest Hemingway's "For Whom the Bell Tolls."