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

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

A masterpiece of Rationalist architecture in the center of Madrid with lizards on it.

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

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

A home for Spain's version of the Tooth Fairy, hidden in an old gas company register.

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.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

This small chapel is built of human bones and decorated with a golden skeleton.

Thanks to an acoustic anomaly, this unassuming stone bench has heard one hundred years of secrets.

Small-town scandal, transformed into timeless pop art

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

This enormous censer uses a pulley system installed over 400 years ago.

This giant sculpture recalls a famous passage from “Alice in Wonderland.”

The world's largest wooden structure.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

These "mermaids" that surround a plaza in Segovia are rather sphinx-like.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

A controversial art piece that harkens back to local folklore.