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
Machu Picchu center. Owned by the National University of San Antonio Abad del Cusco, La Casa Concha also features a study area for local and foreign students. The Paramount Pictures film "Secret of the Incas" (1955), with Charlton Heston and Ima Sumac, was filmed on location at Cusco and Machu Picchu, the first time that a major Hollywood studio filmed on site. Five hundred indigenous people were hired as extras in the film. The opening sequence of the film "Aguirre, the Wrath of God" (1972) was shot in the Machu Picchu area and on the stone stairway of Huayna Picchu. Machu Picchu