Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

The bronze uniforms commemorate the vital role of women during World War II.

This one has sailed five times as far as Sir Francis Drake's famous ship.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

A hands-off space for graffiti artists to hone and display their skills.

The most impressive of Basel's three remaining city gates.

This artistic fountain display pays homage to this area's theatrical history.

An interactive exhibition space dedicated to the kinetic sculptures of Swiss artist Jean Tinguely.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

Once a resting spot for King Fernando VII.

This unassuming bookstore in the heart of Madrid is one of the oldest in Spain.

A must for film lovers in Madrid and home to the Spanish Film Library's projection space.

These three pillboxes still remain as a witness of the Spanish Civil War in a park of Madrid.

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

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

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

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

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

A lush indoor jungle fills this bustling Madrid transportation hub.

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

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