Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

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

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

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.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

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

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

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

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

A 16th-century Andalusian palace.

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

The world's largest wooden structure.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

A remarkable lava formation encloses a line of Buddhist statues that can't be accurately counted, according to local mythology.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Shrine to Japanese water-goblins, complete with their preserved body parts.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Nine Gardens in one—with tea service.

Once a black market electronics marketplace, now an otaku shopper's paradise.

Japanese national treasure originally built in 593 CE.

Not quite the menace it once was, this monster still has some chops.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."