A special anniversary edition of the sixteenth-century classic, by La Real Academia de La Lengua Española and Alfaguara, contains a prologue by Mario Vargas Llosa, an introductory text, and complementary analysis by other academics, along with an extensive glossary of terms, in a commemorative edition that follows the adventures of knight-errant Don Quixote de la Mancha and his faithful squire, Sancho Panza, as they travel through Spain.