Machu Picchu grown rapidly. In 1912, 1914 and 1915, Bingham removed thousands of artifacts from Machu Picchu—ceramic vessels, silver statues, jewelry and human bones—and took them to Yale University for further study, supposedly for 18 months. Yale instead kept the artifacts until 2012, arguing that Peru lacked the infrastructure and systems to care for them. Eliane Karp, an anthropologist and wife of former Peruvian President Alejandro Toledo, accused Yale of profiting from Peru's cultural heritage. Many of the articles were exhibited at Yale's Peabody Museum. In 2006, Yale returned some pieces but kept the rest, claiming this was supported by federal case
Intihuatana, Urubamba 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 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. The "Intihuatana" of Machu Picchu was carved directly into the bedrock of the mountain's summit area. It is characterized by complex surfaces, planes and angles whose purpose at this time is unknown. Incomplete descriptions of its purpose by