No one built like the Spanish architect Antoni Gaudi. Art critic, Robert Hughes, returns to Spain to explore the legacy of Antoni Gaudi, the last great cathedral builder of the 20th century. Gaudi used his skills as a mathematician to create complex curvilinear shapes that he saw as tributes to his very conservative Catholic theology. One building is an allegory of the story of St. George and the Dragon, complete with roof tiles like reptile scales and stair railings like a monster's bare backbone. Sinuous, organic, decorated on every surface, his buildings pretty much defy the whole history of modern architecture. The patrons are requested to take seats by 6:45 PM.