Alastair Sooke explores the riches and unique legacy of Greek art, telling the story of its mysterious origins as he starts his journey at the palace of Knossos in Crete. He then travels to Santorini and finds gold in the fabled stronghold of Mycenae, and uncovers the beginnings of a defining spirit in Greek art - embracing mythology, a passion for symmetry, and an obsession with the human body