With a facade that measures just 107 centimeters, this five-story building is one of the skinniest in Europe.

Vibrant street art created with mixed media.

A daily pyrotechnic celebration marks a beloved tradition during Valencia's festival season.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

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

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

An ancient Egyptian temple in the middle of Madrid, Spain.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

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

This small and often-overlooked museum holds some of Spain's finest artistic treasures.

An iconic and controversial ancient Iberian funerary urn with a hauntingly penetrating gaze.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

A lush indoor jungle fills this bustling Madrid transportation hub.

Commonly acknowledged as the only public monument to the Devil himself.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Cliffside houses provide a spectacular view from their perch above the valley.

Giant topiary dog once played a role in a terrorist bomb plot.

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

The oldest Roman lighthouse still in use.

Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.