Machu Picchu on 1 April 2010. In July 2011, the Dirección Regional de Cultura Cusco (DRC) introduced new entrance rules to the citadel of Machu Picchu. The tougher entrance rules attempted to reduce the effect of tourism. The entrance was limited to 2,500 visitors per day, and the entrance to Huayna Picchu (within the citadel) was further restricted to 400 visitors per day. In May 2012, a team of UNESCO conservation experts called upon Peruvian authorities to take "emergency measures" to further stabilize the site's buffer zone and protect it from damage, particularly in the nearby town of Aguas Calientes, which had
Intihuatana, Urubamba Intihuatana, Urubamba Intihuatana (possibly from in the Quechua spelling "Inti Watana" or "Intiwatana") 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 thought to have been built c. 1450 by the Sapa Inca Pachacuti as a country estate, althought it is equally likely that the Inca discovered much older ruins (the inti watana, the temple of the sun, and the temple of the condor) and opted to build this majestic estate on older foundations. . In the late 16th