Intihuatana (possibly from in the Quechua spelling Inti Watana or Intiwatana)[1][2] at the archaeological site of Machu Picchu (Machu Pikchu) is a notable ritual stone associated with the astronomic clock or calendar of the Inca in South America. Machu Picchu was built c. 1450 by the Sapa Inca Pachacuti as a country estate.[3][4] In the late 16th century, the Viceroy Francisco de Toledo and the clergy destroyed those Intihuatana which they could find. They did so as they believed that the Incas' religion was a blasphemy[5] and the religious significance of the Intihuatana could be a political liability. The Intihuatana of Machu Picchu was found intact by Bingham in 1911, indicating that the Spanish conquerors had not found it.[6]