Visit the Alhambra
The Moorish fortress in Granada is Spain’s most-visited tourist attraction for a reason; the stunning building has some of the best-preserved examples of Islamic architecture in the world and is, along with the nearby Generalife gardens, a Unesco World Heritage Site.
Marvel at Guernica
If you had to see only one painting in Spain make it Picasso´s masterpiece in Madrid´s Reina Sofia Museum. The Spanish artist was inspired to paint the black and white depiction of the bombings of the Basque city of Guernica after reading a graphic description of the carnage that followed by British journalist George Steer.