A lush indoor jungle fills this bustling Madrid transportation hub.

Vibrant street art created with mixed media.

Walk into an underground archeological dig, the site of the Roman Forum that was once the center of Valencia.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

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

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

This house's itty bitty size means no humans allowed.

Drink the 'Blood of Christ' in this Roman Catholic fever dream.

An eerie collection of the surviving structures from a past celebration of the future.

A reservation-only highland forest reserve of endangered Pinsapar firs stands above a village in Andalucía.

This remote location of this Moorish stronghold means it doesn’t attract many tourists—and that it still has the aura of fear and bravery of the 1300s.

Its appearance in "Game of Thrones" may spur on the long-awaited restoration of this medieval shipyard.

Spain's largest bullring offers a unique glimpse at architecture and history.

The final resting place of the great navigator, or maybe his brother.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

The world's largest wooden structure.

A 16th-century Andalusian palace.

Earth's rocky history has rarely glittered so brightly as it does in this Spanish museum.

This open-air sculpture museum is located under a bridge in the center of Madrid.

This phone booth was recreated to honor "La cabina," considered the best horror film in the history of Spanish television.

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

A window into a long-lost world, these colorful tiles advertise a long-defunct range of purgative teas, harmless smokables, and diarrhea cures.

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

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