These 400-year-old ruins are all that's left of the monastery where Ines de Castro was assassinated by the King of Portugal.

A towering monument in Spain has proven to be more labor-intensive than initially planned.

Meant to resemble a massive tree, the building is the best example of Spanish organicist architecture in Madrid.

Inaugurated three times, this tower offers some of the best views of Madrid.

Madrid's last horchata kiosk is a blue-and-white beacon of refreshment.

A lush indoor jungle fills this bustling Madrid transportation hub.

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

A haven for book enthusiasts across the street from Retiro Park.

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

After the queen of Spain had a dream where these statues fell and crushed her, they were removed from the palace and given new homes around Madrid.

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

Artist Natividad Sánchez wrote a new ending for one of Roman mythology's tragic love stories.

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

This modest lottery shop draws hopefuls all year long, but come Christmas season, lines wrap around the block.

This little sun pays homage to a massive gate that once stood at this location.

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

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.

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

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

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

Once a resting spot for King Fernando VII.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.