Wat Phu (or Vat Phou) is a ruined Khmer temple complex located at the base of mount Phu Kao, in the Champasak province. The Hindu temple structures date from the 11th to 13th centuries. Wat Phu is small compared with the monumental Angkor-era sites in Cambodia but the tumbledown pavilions, enigmatic crocodile stone and tall trees that shroud much of the site give Wat Phu a mystical atmosphere. The temple is still in use as a Buddhist site today.