Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

Beautiful tiles decorate many of the town's surfaces and stand testimony to its glorious artistic history.

The Gaudí-inspired building that was the start of Terrassenc modernism.

Seaside ruins of a settlement that date back to the first century B.C.

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

Spain's stunning solar energy plant.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

Giant granite sculptures representing family on the northern coast of Spain.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

A former steam-powered mill from the 1800s is now an industrial park with a giant steel dragon slide.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

A medieval village holds a very modern hotel.

Earth's rocky history has rarely glittered so brightly as it does in this Spanish museum.

A huge cathedral single-handedly constructed by one eccentric monk.

Famed architect Antoni Gaudi built this generous thank you gift to a friendly host who housed him during a job.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

This ancient Spanish castle sits high upon a hilltop.

The earliest known map to show America, discovered by accident at a Paris bookshop.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

A once-secret library of Freemason history in Catalonia.

Bold black and white motifs of life and death add a dramatic flair to this 17th-century crypt.

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”