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

This fascinating and poignant museum chronicles every imaginable aspect of Spanish colonialism in the Americas.

A reproduction of the famous prehistoric cave paintings is hidden underground at the National Archaeological Museum.

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

A pair of gigantic baby heads greet passengers at Atocha Station.

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

A lush indoor jungle fills this bustling Madrid transportation hub.

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

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

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

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.

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

This funky former tobacco factory is one of the most striking examples of Madrid's cultural diversity.

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

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

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

An old, deep well, connected with a miraculous, divine rescue and the patron saint of Madrid.