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

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

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

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

An ancient irrigation system that turned arid deserts into oases.

A museum dedicated to the musical instruments used in traditional Moroccan music.

Local authorities nearly destroyed this mural before a viral video rallied international support to save it.

This historic bathhouse that likely dates back to the 1300s.

Known to backpackers as the "Steps of Doom," this walkway carved into the side of a seaside cliff leads to the Roman Tombs.

A sign marks where the two bodies of water meet.

This restored 17th century synagogue is one of the few remaining structures in Morocco’s ruined Jewish quarters.

The ruins of an early-18th-century complex that could once house up to 12,000 horses.

The world's largest concentrated solar power plant.

The rubbery beast is sculpted from recycled materials.

The designated Jewish quarter in Fez dates back to the 15th century.

At this faithfully preserved medina off the Moroccan tourist circuit you can walk through six centuries of history in one day.

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

Morocco’s modern capital was once a haven for Barbary pirates, who went so far as to establish a republic of their own.

The former home of Dutch anthropologist Bert Flint now houses a collection of Berber art and artifacts.

North Africa's first museum of its kind preserves the culture of Moroccan women and their artistic achievements. 

The oldest known university in the world is in Fez, Morocco.

Crumbling necropolis set high above Fez.

The courtyard of this small Marinid madrasa is a dazzling example of intricate Islamic architecture.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.