An imperial church bombed to ruins during WWII now stands as a jagged memorial.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

A slice of central Asia in the middle of Berlin.

This Arab fortress was once the largest citadel in Western Europe.

A controversial art piece that harkens back to local folklore.

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

A lush indoor jungle fills this bustling Madrid transportation hub.

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

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

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

The remains of this misplaced church were moved here stone by stone.

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

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

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

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

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

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

An automaton perched above an classic clock and watch store

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

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

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

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

Just like in Hollywood, Madrid has also a forgotten walk of fame.

Dedicated to a young woman who broke gender barriers at the University of Madrid.