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

A hidden medieval crypt where a famous legend says the devil used to teach black magic.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

This lucky bronze frog was gifted to Madrid by a casino.

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

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

A lush indoor jungle fills this bustling Madrid transportation hub.

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

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

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

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