The Misterio de Elche (Spanish pronunciation: [misˈteɾjo ˈðe ˈeltʃe]), in English the Mystery Play of Elche or Elche Mystery Play and in Valencian Misteri d'Elx (Valencian pronunciation: [misˈtɛɾi ˈðɛʎtʃ]), is a liturgical drama dating from the Middle Ages, which is enacted and celebrated in the Basilica de Santa María in the city of Elche on 14 and 15 August of each year. In 2001, UNESCO declared it one of the Masterpieces of the Oral and Intangible Heritage of Humanity.