Critic and art historian Andrew Graham-Dixon travels from southern to northern Spain to tell the story of some of Europe's most exciting and vital art. In the final part, he reveals how the north of the country has produced some of the most dazzling and iconic art of the modern age. Spain's turbulent history has shaped artists from Francisco Goya to Pablo Picasso. Graham-Dixon argues that Spanish architecture is the art form now taking the nation forward in the new millennium.