This waterfall, also known as the “the castanets” is said to mimic the sounds of the waves in Portugal.

A giant hand emerging from the ground beckons visitors into a park in Madrid.

A medieval castle-turned-luxury villa is now open to the public.

A subterranean relic of the Spanish Civil War hides below this picturesque park.

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

This 40-meter waterfall of light graces one of the most iconic stations in the Madrid metro network.

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

King Carlos IV laid the first stone during construction of this chapel.

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

The remains of a convent turned military barrack in the heart of Madrid.

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 small but stubborn relic of Spain’s turbulent past hides in plain sight.

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

One of Madrid's most beloved statues is of an anonymous citizen.

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

The oldest vestiges of Madrid found here, have been incorporated into this new museum.

This small museum tucked within a subway station holds pieces from Madrid's past.

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

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

A small museum displays some of the artifacts discovered during a subway station renovation.

Sometimes called the Banksy of Madrid, Muelle was a pioneer of street art in the Spanish city.

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.